New guests - qualitatively new polystyrene foam. New GOSTs - qualitatively new expanded polystyrene Semi-rigid mineral wool boards according to GOST 15588 86

Foam board is environmentally friendly, non-toxic, warm and soundproofing material, which has been used in construction for more than 40 years and has proven itself to be the most economical, easy to use and has a low degree of thermal conductivity and vapor permeability. Expanded polystyrene is a neutral material that does not emit any substances harmful to humans and their environment, is not subject to decomposition under the influence of microorganisms and does not have a limited shelf life.

Manufactured at the TIS plant: Manufactured according to GOST - 15588-86, standard size slabs 1000x2000, any thickness in increments of 5 mm. It is also possible to manufacture any products from foam plastic.

We produce slabs with quarter grooves for ease of installation and to avoid cold bridges.

All products are supplied with:

Quality certificate, SES conclusion and report on fire danger. The TIS plant also tested physical and mechanical parameters at UralNIIAS.

Polystyrene foam is scientifically called expanded polystyrene (abbreviated EPS) or foamed polystyrene. PPS is used in construction as a sound and heat insulating material.
PPS refers to the so-called monomaterials, i.e. it consists of one type of material, namely polystyrene. Polystyrene, in turn, is based on the natural substance styrene, which we eat together with strawberries, nuts and other products. Therefore, all over the world, EPS is used for packaging and storage. food products. Meat, fish, ice cream and vegetables are often stored in polystyrene foam packaging. Expanded polystyrene is safe for health.
PPS has been used in construction for almost 40 years. It is used to protect premises from cold, heat and extraneous noise.
Most often, EPS in the form of slabs (sheets) is used to insulate buildings.

Saving
In buildings with good thermal insulation, heating costs are 75% lower than in buildings without such insulation. Therefore, PPS not only makes the house cozy at any time of the year, but saves money on heating and air conditioning. Plus, to all this, PPS has a favorable price-quality ratio, which also saves money during the construction of a building.

Application
Due to its properties, PPS is used for insulating objects under construction, as well as already constructed buildings. PPS is used in the construction of private cottages, multi-storey buildings, warm pools, saunas, as well as refrigeration rooms. In a building, PPS is used to insulate walls (outside, inside and inside), floors, ceilings last floor, roofs (pitched and flat).

Properties of slab polystyrene foam and the benefits of its use for residents

With all its diversity, all materials made from expanded polystyrene (EPS), as a rule, have the following properties, which cannot but please those who choose insulation for their home, sauna or swimming pool.

Thermal insulation
To keep your home warm and cozy in winter, and cool in summer, use effective insulation - slab PPS.

Soundproofing
It has been proven that constant noise (city, noisy neighbors) is the cause of many nervous disorders. Therefore, for effective sound insulation of walls, floors, and roofs, PPS slabs are used.

Durability
Research carried out for 40 years shows that PPS is indeed a non-aging insulating material that does not change its properties (thermal conductivity coefficient, physical and technical parameters and geometric shape).
Sometimes you can come across the opinion that EPS is an unstable material and that it “oxidizes.” EPS is unstable to organic solvents (benzene, toluene, acetone, etc.). This is where myths arise about its disappearance over time. The reason is usually is an inappropriate selection of adhesive for EPS boards (for example, cold mastics containing organic solvents).In this regard, before covering the insulating layer of expanded polystyrene with roofing felt or other bituminous material, its composition should be checked.

Easy to use

PPS is very convenient to use: it can be easily stored, easily cut, adjusted and installed, and in addition, it does not pose any health hazard, so there is no need for special protective equipment for builders.

Moisture resistance

Moisture has no effect on PPP. Even when submerged for a long time, it absorbs very little water. This means that during the operation of the EPS insulating layer, its quality remains practically unchanged for a long time. This is very important because excess humidity can lead to fungal infection and create an unfavorable indoor microclimate.

Free from lint and dust

Expanded polystyrene insulation is healthy because the material does not contain fibers and does not generate harmful dust like other insulation materials (such as mineral wool).

Does not change the color of the walls

As practice shows, the use of some insulating materials leads to a change in the color of the wall cladding. This phenomenon is not observed when using PPP. Discoloration of materials located near the insulating layer can be caused by leaching of phenol-formaldehyde binders (contained, in particular, in fibrous materials). Since EPS does not contain binders, formaldehyde is not released during its use.

Biological inertia

If the insulation is not installed correctly, mold can develop in your home and the air quality can significantly deteriorate. This happens because some insulating materials may be affected by microorganisms. PPS insulation is not afraid of fungi, mold and bacteria.

Health safety and environment

Pentane is used to foam polystyrene. Just like other gases - alkanes, for example, methane, pentane is constantly formed during natural processes occurring, in particular, in digestive system animals. In the atmosphere, these gases quickly decompose.
A certain amount of additives is added to the foamed polystyrene. Some of them promote the molding of polystyrene foam, which leads to energy savings and improved economic indicators process, others reduce flammability finished products, That is an important condition use of expanded polystyrene in construction.
Additives are introduced in very small quantities. All of them are carefully selected, and manufacturing process carried out in accordance with the requirements ensuring the safety of the material for health and the natural environment during operation.

Savings on heating and air conditioning

In buildings with good thermal insulation, heating costs are 75% lower than in buildings without such insulation. Therefore, PPS not only makes the house cozy at any time of the year, but saves money on heating and air conditioning. Money invested in thermal insulation (on average 0.5 - 3.0% of the cost of a new building) pays off in a very short time.

Wide Application

Thanks to technical properties, PPS is used for insulation of objects under construction, as well as for already constructed buildings. PPS is used in the construction of private cottages, multi-storey buildings, warm swimming pools, saunas, as well as refrigeration rooms. In a building, PPS is used to insulate walls (outside, inside and inside), floors, ceilings of the top floor, roofs (pitched and flat).

Saving on insulation

Thanks to optimal ratio price/quality, the use of slab PPS is more affordable in comparison with other types of thermal insulation (savings reach 15 - 20%).

Extends service life

External thermal insulation prevents significant temperature fluctuations in the main wall, limiting stress and therefore cracking.
Often systems external thermal insulation old buildings using slab PPS are the only possible ones.

Advantages of using slab PPS for builders

What is important for a builder-contractor when he chooses from various options thermal insulation? The most important thing is that the customer likes the building material. To do this, we advise you to show him this page (link to “Slab PPP: benefits for residents”). For the contractor himself, the main thing is that his workers construction site they could easily master the technology, quickly completed the work and remained safe and sound. Slab PPS meets all these requirements, namely its use in construction.

Your employees will be able to work without protective equipment

When working with some construction materials, it is necessary to use various equipment: protective overalls, gloves, goggles, respirators. Expanded polystyrene is absolutely safe for health: it does not contain fibers, binders (such as some types of mineral wool), which can be hazardous to the eyes, skin and mucous membranes respiratory tract. Therefore, when working with it there is no need for special protective equipment.

Easy to use

Expanded polystyrene has a low volumetric weight, it does not generate dust, is not afraid of moisture, and can be easily cut using hand saw or knife, and is also very easy to use mechanical fastening. Therefore, all work on thermal insulation using slab EPS is easy to master and completed in a short time.

You can take on almost any insulation contract

Any types of roofs (flat, pitched), walls (outside and inside the building, in the wall cavity), floor, basement, refrigeration chambers- all these are areas effective insulation using slab PPS. And for the contractor it is ample opportunities to attract new customers.

To the main consumer properties foam plastic (expanded polystyrene) can be classified as:

Safety. Ease of use. Using polystyrene foam in your work, you do not need to use protective equipment: it is non-toxic, odorless, does not emit dust during processing, and does not cause skin irritation. Disposal without harm to the environment and human health.
Good thermal resistance. Moreover, polystyrene foam retains its heat-insulating properties as in wet conditions, and at low temperatures.
Soundproof and windproof. When insulating using polystyrene foam boards PSB-S, no additional wind protection is needed. In addition, the sound insulation of structures is improved.
Moisture resistance. Thermal insulation boards PSB-S are not hygroscopic. Moisture absorption. Even when immersed in water for a long time, PSB-S thermal insulation boards absorb only a few percent of water from their volumetric weight, this allows them to be used for insulating foundations with direct contact of the insulation with the ground.
High load resistance. Maintaining stable dimensions. PSB-S foam plastic remains stable in the building structure, and throughout the entire life of the structure: it does not shrink, does not decrease in size and does not move in the structure.
Durability. During the entire life of the building, the quality of the properties of PSB-S foam plastic does not deteriorate.
Resistance to flammability. All PSB-S foam plastics are made from raw materials containing fire-resistant material - fire retardant, and comply with the requirements of GOST 15588-86. The operating temperature of expanded polystyrene is from -200 to +85° C.

Expanded polystyrene is a heat and sound insulating material. Expanded polystyrene is made from suspension polystyrene; in finished form it is a rigid foamed thermoplastic consisting of fused granules. Polystyrene foam is highly resistant to different environments, including lime, cement, silicone oils, alcohols, paints, saline solutions, alkalis, soaps, weak acids, as well as sea water and fertilizers. With prolonged exposure, vegetable, animal and paraffin oils, as well as fats, have some effect on polystyrene foam. diesel fuel and Vaseline. Polystyrene foam (polystyrene), unlike most mineral wool boards, has such properties as, for example, strength. High grade polystyrene (PSBS-50) has a compressive strength of up to 25 tons (!!!) per square meter(at 10% deformation). Polystyrene foam is very convenient; when used, it is easy to move, store, and cut.

Foam plastic is used in construction panel houses, it is used to make the internal thermal insulation layer wall panel. Polystyrene foam is a material that does not contain ozone-depleting elements. With the help of various additives, the flammability of polystyrene foam can be reduced, and after using the additives, polystyrene foam becomes self-extinguishing, i.e. goes out no more than 4 seconds after the source of fire is removed. Refractory, self-extinguishing polystyrene foam is environmentally friendly during operation. The production of foam plastic occurs mainly in the form of slabs; it is possible to produce “sandwich panels” by pouring.

Expanded polystyrene (foam plastic) is produced by heating small polystyrene beads filled into a rigid mold with hot steam. These balls are also called beads. When each ball is heated, a gas is released inside, which “inflates” each ball. As the volume of the beads increases (when heated), the balls seem to stick together and occupy the volume of the mold. After cooling, the product is ready.

Properties of expanded polystyrene (foam):

is the ability to form into complex shapes;
high compressive strength at low density;
good thermal properties: low thermal conductivity, low thermal expansion, structural stability in the temperature range from -180 to +80 degrees;
low diffusion of water vapor and low water absorption;
resistance to a wide range of chemical and other environments;
resistance to biological effects;
fire resistance;
polystyrene foam boards, due to their low weight, they are easy to handle and process, easy to cut; building structures can be glued together using cement, gypsum solutions, mastic;
the products are non-toxic, odorless and do not generate dust;
expanded polystyrene is environmentally friendly, because during production, substances and gases that are not hazardous to the environment and human health are used; products do not contain chemical compounds freon series, harmful to the ozone shell. Application of foam plastic (expanded polystyrene) thermal insulation boards allow:
Increase the usable area of the building by reducing the thickness of walls and ceilings.
Reduce installation time.
Reduce material costs in the construction of modern foundations by lightening the above-ground parts of buildings and structures.
Get a high-quality foundation that, insulated with PSB-S slabs, is not exposed to frost.
Increase thermal comfort in rooms.
Reduce costs for heating equipment by reducing heat loss after insulation. Increase the usable area of the building by reducing the thickness of walls and ceilings.

When designing and implementing thermal insulation, you should pay attention to Special attention on the:
- thickness of thermal insulation;
- ventilation of the space between the coating and thermal insulation to prevent moisture condensation during the cold period;
- polystyrene foam fastening system.

Polystyrene foam - modern, environmentally friendly pure material, allowing not only to provide high thermal insulation and fire safety, but also to bring decent economic benefits.
Expanded polystyrene is indispensable for insulating underground parts of a building, foundations, basement walls, ground floors, where the use of other types of thermal insulation is unacceptable due to capillary rise groundwater, and protects waterproofing from harmful environmental influences. This can be said with complete confidence by its moisture-resistant qualities, as well as its lightness and durability.
Expanded polystyrene boards are almost weightless, easy to transport and install, durable and reliable. Their guaranteed service life in the Far North is at least 50 years!
Maintenance comfortable conditions when operating buildings constructed from traditional building materials, requires increased consumption of fuel resources, which ultimately does not have a positive impact on the unsatisfactory environmental situation in the regions and especially in major cities. Determined that total heat loss through walls, coverings and windows accounts for 70% of all heat losses through building envelopes. Therefore, by Resolution No. 18-81 of August 11, 1995, the Ministry of Construction of Russia significantly increased the required level of thermal resistance (heat transfer resistance) of enclosing structures. Laying expanded polystyrene into the external walls of residential buildings allows you to reduce heat loss several times, since 12 cm of expanded polystyrene is equivalent to 2 m brick wall and 4 m of reinforced concrete wall. Today, construction sites located in different climatic and geographical zones are in dire need of expanded polystyrene.
Expanded polystyrene is an environmentally friendly, non-toxic heat and sound insulating material that has been used in construction for 40 years and has proven itself to be the most economical, easy to use and has a low degree of thermal conductivity and vapor permeability.

If we compare the thermal conductivity of polystyrene foam with other materials, then a slab of polystyrene foam 50 mm thick is equivalent in thermal insulation properties to a dry mineral wool layer of 110 mm, dry foam concrete of 500 mm, wood of 195 mm and brickwork of 850 mm! Thus, the use of these slabs results in savings in construction and operating costs by 20-50 times!
The production of expanded polystyrene does not use freon gas, which is harmful to the atmosphere. Expanded polystyrene belongs to the group of plastics that, when burned, emit exactly the same gases as when burning wood or cork. Modern foam plastics are produced in fire-resistant versions. Moisture does not affect the thermal insulation properties of this material and does not cause the formation of bacteria and mold in it, which allows expanded polystyrene to be widely used in the food industry.

THE MATERIAL CAN BE PURCHASED FROM OFFICIAL REPRESENTATIVES

GOST 15588-86

(ST SEV 5068-85)

Group Zh15

STATE STANDARD OF THE USSR UNION

Expanded polystyrene plates

Specifications

Polystyrene foam boards.

Date of introduction 1986-07-01

APPROVED AND ENTERED INTO EFFECT by resolution State Committee USSR for Construction Affairs dated June 17, 1986 No. 80

INSTEAD GOST 15588-70

REISSUE. June 1988

This standard applies to expanded polystyrene boards manufactured in a non-press process from suspension foaming polystyrene with or without the addition of a fire retardant.

The slabs are intended for thermal insulation as the middle layer of building envelopes and industrial equipment in the absence of contact of the slabs with interior spaces. The temperature of the insulated surfaces should not be higher than 80 C.

Plates belong to the group of combustible materials.

The standard corresponds to ST SEV 5068-85 in the part specified in the reference appendix.

1. Types and sizes

1.1. Plates, depending on the presence of fire retardant, are made of two types:

PSB-S - with fire retardant;

PSB - without fire retardant.

1.2. Plates, depending on the maximum density value, are divided into grades: 15, 25, 35 and 50.

1.3. The nominal dimensions of the slabs should be:

along the length - from 900 to 5000 mm with an interval of 50 mm;

in width - from 500 to 1300 mm with an interval of 50 mm;

thickness - from 20 to 500 mm with an interval of 10 mm.

By agreement between the manufacturer and the consumer, it is allowed to produce slabs of other sizes.

1.4. Maximum deviations from nominal dimensions should not exceed, mm:

for slabs up to 1000 inc. length................................±5;

" " " over 1000 to 2000 inclusive................±7.5;

" " " over 2000........................ ±10;

in width

for slabs up to 1000 inclusive width................................±5;

" " " over 1000........................±7.5;

by thickness

for slabs up to 50 thick...................................±2;

" " " over 50............................±3.

1.5. The symbol of the slabs must consist of a letter designation of the type of slab, brand, dimensions of length, width and thickness in millimeters and the designation of this standard.

Example symbol slabs of foamed polystyrene with the addition of fire retardant grade 15, length 900 mm, width 500 mm and thickness 50 mm:

PSB-S -15 -900x500x50 GOST 15588-86

The same, slabs of foamed polystyrene without fire retardant grade 15, length 900 mm, width 500 mm and thickness 50 mm:

PSB-15 -900x500x50 GOST 15588-86

2. Technical requirements

2.1. Plates must be manufactured in accordance with the requirements of this standard and according to technological regulations approved in the prescribed manner.

2.2. For the manufacture of boards, foaming polystyrene containing a blowing agent (isopentane or pentane) and a residual monomer (styrene) is used.

Polystyrene used for the manufacture of slabs must meet the requirements of regulatory and technical documentation for the specified material.

2.3. No bulges or depressions with a length of more than 50 mm, a width of more than 3 mm and a height (depth) of more than 5 mm are allowed on the surface of the slabs. In slabs, blunted edges and corners with a depth of no more than 10 mm from the top of the right angle and bevels on the sides of blunted corners with a length of no more than 80 mm are allowed.

2.4. The slabs must have the correct geometric shape. The deviation from the flatness of the slab edge should not be more than 3 mm per 500 mm of edge length.

The difference between the diagonals should not exceed, mm:

for slabs up to 1000 in length ...................................5

" " " over 1000 to 2000 ....................7

" " " over 2000................................13

2.5. Indicators physical and mechanical properties slabs must comply with the standards specified in the table.

Indicator name	Standard for slab grades


Density, kg/cub.m		From 15.1 to 25.0	From 25.1 to 35.0	From 35.1 to 50.0	From 15.1 to 25.0	From 25.1 to 35.0	From 35 to 50.0
Compressive strength at 10% linear deformation, MPa, not less
Bending strength, MPa, not less
Thermal conductivity in dry condition at (25±5) C, W/(m K), not
Self-combustion time of PSB-S type slabs, s, no more
Humidity, %, no more
Water absorption in 24 hours, % by volume, no more

2.6. If slabs do not meet at least one of the requirements for a given brand, except density, they should be assigned to a brand with a lower density.

3. Acceptance rules

3.1. Plates are accepted in batches. The batch must consist of slabs of the same type, brand and the same nominal dimensions. The batch size is set to a volume of no more than daily production on one production line.

3.2. The quality of the slabs is checked according to all indicators established by this standard by conducting acceptance and periodic tests.

3.3. During acceptance tests the following is checked: linear dimensions, correctness of geometric shape (deviation from flatness, difference in lengths of diagonals), appearance (bluntness of edges and corners, bevels on the sides of blunt corners, convexities or depressions), density, compressive strength at 10% deformation, bending strength, humidity, water absorption and self-burning time. It is allowed, by agreement with the consumer, to determine water absorption at least once a quarter.

Thermal conductivity is determined periodically when changing technology or raw materials used, but at least once every 6 months.

3.4. To check the compliance of the slabs with the requirements of this standard in terms of linear dimensions, correct geometric shape and appearance, 10 slabs are selected from a batch with a volume of up to 200 cubic meters, and 20 slabs from a batch with a volume of over 200 cubic meters.

3.5. To check the physical and mechanical properties, three slabs are selected from 10 or 5 from 20 slabs that have passed the test according to clause 3.4.

3.6. If the test results are unsatisfactory for at least one of the indicators, a double number of slabs selected from the same batch is retested for this indicator.

If the results of repeated tests are unsatisfactory, the batch of slabs is not subject to acceptance.

For a batch of products not accepted based on the results of control of linear dimensions, correctness of geometric shape and appearance, it is allowed to use continuous control, in which the products are controlled according to the indicator for which the batch was not accepted.

4. Test methods

4.1. Before making test samples, slabs must be kept for at least 3 hours at a temperature of (22±5) C.

Testing of samples is carried out in a room with air temperature (22±5) C and relative humidity (50±5)% after preliminary exposure to the same conditions for at least 5 hours.

4.2. The length and width of the slabs are measured with a ruler according to GOST 427-75 in three places: at a distance of 50 mm from the edge and in the middle of the slab. Measurement error - no more than 1.0 mm.

The average is taken as the length and width arithmetic value slab measurements.

4.3. The thickness of the slabs is measured with a caliper according to GOST 166-80 in 8 places at a distance of 50 mm from the side edges of the slab: 4 points in the middle of the length and width of the slab and 4 points at the corners of the slab at a distance of 50 mm from the intersection of the side edges. Measurement error - no more than 0.1 mm.

The thickness is taken as the arithmetic mean of the slab measurements.

4.4. To determine the difference between the diagonals, measure the lengths of two diagonals on the largest face of the slab using a tape measure according to GOST 7502-80.

The measurement result is taken to be the difference between the diagonals of the slab.

4.5. The bluntness of the ribs and corners is determined with a measuring instrument with an error of no more than 1.0 mm.

4.6. The length, width and height (depth) of the bulges or depressions of the slabs are measured with a double-sided caliper with a depth gauge in accordance with GOST 162-80.

4.7. The deviation from the flatness of the slabs is determined by applying the edge of a ruler to the edge of the slab and using another ruler to measure the gaps between the surface of the slab and the edge of the applied ruler.

The largest of the measured gap values is taken as an indicator of the non-flatness of the slab surface.

4.8. Determination of density

The essence of the method is to determine the mass per unit volume of the slab.

4.8.1. Equipment

Scales with an error of no more than 5 g.

Ruler according to GOST 427-75 for measuring length and width.

Vernier calipers according to GOST 166-80 for measuring thickness.

4.8.2. Carrying out the test

The slabs selected according to clause 3.5 are weighed with an error of no more than 0.5%. Then the geometric dimensions of the slabs are determined in accordance with paragraphs. 4.2 and 4.3.

4.8.3. Processing the results

The density of the slab () is calculated in kilograms per cubic meter according to the formula

		plate mass, kg;
		slab volume, cubic m
		slab humidity, %.

The arithmetic mean of all determinations, rounded to 0.1 kg/cub.m., is taken as the test result.

4.9. Humidity determination

The essence of the method is to determine the difference in the mass of the sample before and after drying at a given temperature.

4.9.1. Sampling

To determine the humidity, three samples are cut from the slabs selected according to clause 3.5: one from the middle and two at a distance of 50 mm from the edge of the slab. The sample dimensions should be mm. If the thickness of the slab from which the samples are made is less than 50 mm, then the height of the sample is taken equal to the thickness of the slab.

4.9.2. Equipment

Scales with an error of no more than 0.01 g.

Drying cabinet with a heating temperature of up to 100°C and ensuring maintenance set temperature with an error of no more than 2°C.

Desiccator.

Anhydrous calcium chloride.

4.9.3. Carrying out the test

Samples are weighed with an error of no more than 0.01 g, dried in an oven at a temperature of (60±2) C for 3 hours, and then cooled in a desiccator with calcium chloride for 0.5 hours, after which the samples are weighed with the same error.

4.9.4. Processing the results

The percentage moisture content of the sample is calculated using the formula

		weight of the sample before drying, g;
		weight of the sample after drying, g.

The test result is taken as the arithmetic mean of parallel moisture determinations, rounded to 1.0%.

4.10. Determination of compressive strength at 10% linear deformation

The essence of the method is to determine the magnitude of the compressive force that causes deformation of the sample along the thickness by 10% under given test conditions.

4.10.1. Sampling

To determine the compressive strength at 10% linear deformation, three mm-sized samples are cut from the slabs selected according to clause 3.5 (one from the middle and two at a distance of 50 mm from the edge of the slab).

If the thickness of the slab from which the samples are made is less than 50 mm, then the height of the samples is taken to be equal to the thickness of the slab.

It is allowed to use samples on which the moisture content of the slabs was determined.

4.10.2 Hardware

A testing machine that provides load measurement with an error not exceeding 1% of the compressive force value, and a constant sample loading rate (5 - 10) mm/min. The testing machine must have a self-aligning support and a clamp movement measurement system that provides strain measurement with an error of no more than 0.2 mm.

Metal ruler according to GOST 427-75.

4.10.3. Carrying out the test

The linear dimensions of the sample are measured. The sample is then placed on the machine base plate so that the compressive force acts along the axis of the sample. The sample is loaded until a load corresponding to 10% linear deformation is achieved, and the sample is loaded in the direction of the thickness of the slab from which it was cut. Length of the sample, m;

sample width, m.

The test result is taken as the arithmetic mean of parallel determinations of the strength of the slabs, rounded to 0.01 MPa.

4.11. Determination of bending strength

The essence of the method is to determine the magnitude of the force when bending a sample, causing its destruction under given test conditions.

4.11.1. Sampling

To determine the tensile strength in bending, two samples of size [(250x40x40)±1] mm are cut from the slabs selected according to clause 3.5 (one from the middle and one at a distance of 50 mm from the edge of the slab). If the selected slabs have a thickness of less than 40 mm, then the height of the sample should be equal to the thickness of the slab.

4.11.2. Equipment, equipment, tools

A testing machine that provides a sample loading rate of (5-10) mm/min and is equipped with a device with a loading indenter and supports having a radius of curvature (6±0.1) mm. The distance between the axes of the supports should be (200±1) mm.

4.11.3. Carrying out the test

Before testing, the width and thickness of the sample are measured at at least three points with an error of no more than 0.1 mm.

The sample is placed on supports so that the plane of the sample touches the supports along its entire width, and the ends of the sample extend beyond the axis of the supports by at least 20 mm. In this case, the height of the sample must coincide with the direction of its loading.

At the moment of sample failure, the breaking load is recorded.

4.11.4. Processing the results

The bending strength of the sample in megapascals is calculated using the formula

sample width, m;

sample thickness, m.

The arithmetic mean of parallel strength determinations, rounded to 0.01 MPa, is taken as the test result.

4.12. Thermal conductivity is determined according to GOST 7076-87 on samples cut one at a time from the middle of the slabs selected according to clause 3.5.

4.13. Determination of self-burning time

The essence of the method is to determine the time during which the sample continues to burn after the fire source is removed.

4.13.1. Sampling

To determine the self-burning time, one sample is cut out from the middle of the slabs selected according to clause 3.5. The dimensions of the sample should be [(140x30x10)±1] mm.

4.13.2. Equipment and materials

Desiccator according to GOST 25336-82.

Anhydrous calcium chloride according to TU 6-09-4711-81.

Gas or alcohol burner according to GOST 21204-83.

Stopwatch of the 2nd accuracy class according to GOST 5072-79.

Vernier calipers according to GOST 166-80 or metal ruler according to GOST 427-75.

4.13.3. Carrying out the test

Before testing, the samples are dried in an oven at a temperature of (60±2)°C for 3 hours, then cooled in a desiccator with calcium chloride for 0.5 hours. After this, the sample is fixed in a vertical position on a tripod and kept in a burner flame for for 4 s. The height of the burner flame from the end of the wick should be about 50 mm, and the distance from the sample to the burner wick should be about 10 mm. Then the burner is removed and the time during which the sample continues to burn is recorded using a stopwatch.

The result is taken as the arithmetic mean of the sample test results.

4.14. Determination of water absorption

The essence of the method is to determine the mass of water absorbed by samples of dry material after they are completely immersed in distilled water and kept in it for a given time.

4.14.1. Equipment and materials

Technical scales with a weighing error of no more than 0.01 g.

Drying cabinet with a heating temperature of up to 100°C, ensuring maintenance of the set temperature with an error of no more than 2°C.

Desiccator according to GOST 25336-82.

A bathtub with a mesh stand and weight.

Anhydrous calcium chloride according to TU 6-09-4711-81.

Distilled water according to GOST 6709-72.

Vernier calipers according to GOST 166-80.

4.14.2. Sampling

To determine water absorption, one sample of size [(50x50x50)±0.5] mm is cut from the slabs selected according to clause 3.5. If the height of the sample is less than 50 mm, then the height of the sample is taken to be equal to the thickness of the slab. The length, width and thickness of the samples are measured at at least three points with an error of no more than 0.1 mm.

4.14.3. Before testing, samples are dried at a temperature of (60±2)°C for at least 3 hours, then cooled in a desiccator for at least 0.5 hours and weighed with an error of 0.01 g.

The samples are placed in a bath on a mesh stand and their position is fixed with a mesh weight. Then water with a temperature of (22±5)°C is poured into the bath so that the water level is at least 20 mm above the mesh load.

24 hours after adding water, the samples are removed, wiped with filter paper and weighed with an error of no more than 0.01 g.

4.14.4. Processing test results

Water absorption as a percentage by volume is calculated using the formula

The article discusses the fundamental differences between GOST 15588-1986 “Polystyrene foam boards. Technical conditions" and new GOST R 56148-2014 (EN 13163:2009) "Thermal insulating polystyrene foam products (EPS) used in construction. Technical conditions", GOST 15588-2014 "Heat-insulating polystyrene foam boards. Technical conditions".

White expanded polystyrene has been successfully used all over the world since its invention for more than 60 years. This environmentally friendly and reliable thermal insulation material has found wide application in residential and industrial construction, the packaging industry, and other industries.

The progress of mankind does not stand still - processes, technologies, and the material itself are constantly being improved. Regulation and standardization through joint efforts of the industry community and government agencies also develop accordingly.

A working group of specialists - members of the Association of Expanded Polystyrene Manufacturers and Suppliers (which includes our ET-Plast plant) has prepared two new ones to replace the outdated GOST: one of which is focused on European standards, the second is characteristically Russian. Both came into force this year 2015.

Prerequisites for the development of new standards

1. GOST 15588-1986 “Polystyrene foam boards. Technical specifications" was adopted in 1986. The need for its revision is associated with increased requirements for the quality of building materials in Russian market, which must be ensured, first of all, by strength, thermal insulation and other performance characteristics. When classifying and marking polystyrene foam boards according to GOST 15588-86, these characteristics were secondary, which contributed to the penetration of low-quality products into the construction market.

Over the past 30 years, dramatic changes have occurred in the expanded polystyrene industry - primarily in the production technology of expanded polystyrene products: from the autoclave method to the “thermal shock” block method. The raw material base has changed, and the main manufacturers of expanded polystyrene products have long been working on equipment supplied by world industry leaders. The quality and branding of products went much further than GOST 15588-86, and manufacturers were forced to develop various technical specifications of their own.

2. GOST R 56148-2014 (EN 13163:2009) “Thermal insulating polystyrene foam (EPS) products used in construction. Technical specifications" was developed for use in the Russian Federation. The main goal of its development was the harmonization of national standards with European ones, the approximation of European principles of classification and test methods thermal insulation materials and products, to the methods used in Russian construction.

At the same time, manufacturers of extruded polystyrene foam and thermal insulation materials based on mineral fibers have prepared their own standards 13164 and 13162, which correspond to modern European standards. According to members of the Association of Manufacturers and Suppliers of Expanded Polystyrene, standard 13163 “Thermal insulation products made of polystyrene foam (EPS) used in construction. Technical Specifications" marked the beginning of the development of a number of regulations Russian Federation on various special products made of polystyrene foam, corresponding to the European level.

The Association of Manufacturers and Suppliers of Expanded Polystyrene was created comprehensive program development of national standards for expanded polystyrene products. The program was approved for General meeting, and sent to TC 465 “Construction”. These are standards based on standard 13163 “Thermal insulation products made of polystyrene foam (EPS) used in construction. Technical specifications", such as:

GOST R (EN 1603) “Thermal insulation products used in construction. Method for determining dimensional stability indicators based on the results of laboratory tests at a temperature of 23°C and 50% humidity";
GOST R (EN 13793) “Thermal insulation products used in construction. Determination of properties under the influence of cyclic load";
GOST R (EN 14933) “Thermal insulation and lightweight fillers for use in civil engineering”;
GOST R (EN 14309) “Thermal insulation from expanded polystyrene polystyrene foam (EPS), for construction equipment and industrial installations»;
GOST R (EN 13950) “Composite panels made of expanded polystyrene (EPS) and plasterboard”;
GOST R (EN 14509) “Self-supporting composite metal panels with an expanded polystyrene (EPS) core.

All these standards were to form the basis for the creation of a national technical regulations“On the safety of buildings and structures.” However, Russian technical regulation, the development of economic and political relations with the European Union, as well as within the established Customs Union prompted us that, in parallel with European codes, methods and standards, it is necessary to develop the existing Russian approaches to technical standardization and regulation, which have been successfully used in construction.

3. GOST 15588-86 “Heat-insulating polystyrene foam boards. Technical specifications" remains an international standard, still in force in the CIS countries. The Association began to develop its updated version, which describes slabs intended for thermal insulation as the middle layer of building envelopes. The presented international standard will contribute to the development of the regulatory and technical framework in construction. Its use will improve the quality of expanded polystyrene products and increase the level of energy efficiency in construction.

The purpose of developing this standard was not only to bring the regulatory framework into line with the existing reality on the market of expanded polystyrene and other thermal insulation materials, but also to maximize harmonization with European requirements for the classification and testing methods of expanded polystyrene products used in construction.

Fundamental differences between the new GOST 15588-2014 and 15588-86

1. Nowadays, industry produces a wider range of brands and types of slabs. In the old GOST, the basis of classification was the density of products. In addition, all products were divided into only two types of quality.

The density gradation range was 10 kg per m³, and one brand covered products with completely different strength and thermal characteristics. There were 4 brands of slabs in total. The brand designation indicated the maximum density, while all manufacturers produced products at the minimum density, which led to misunderstandings in construction and supply structures.

The new GOST provides for a completely different system of classification and marking of polystyrene foam thermal insulation boards. Although it is still based on density, each new brand has qualitatively new (significantly different) strength and thermal insulation properties, which are the main ones for thermal insulation materials.

For the first time, builders and designers are offered slabs of the following two types:

cut with string from large blocks 4000 X 1000 X 1200 mm;
plates, ready thermoformed, with a closed cell structure. These come out of the molding machine with the finished length, thickness and width, and the polystyrene foam balls remain intact, undamaged by cutting.

Indicators of the physical and mechanical properties of type P slabs (cut from blocks) must meet the requirements specified in Table 1, RG type slabs (graphite-containing facade) - in Table 2, T type slabs (thermoformed) - in Table 3.

Table 1. Physical and mechanical properties of polystyrene foam boards of type P (cut from blocks)

Indicator name
Indicator name	PPS10	PPS12	PPS13	PPS14	PPS16F	PPS17	PPS20	PPS23	PPP25	PPS30	PPS35
Density, kg/m 3, not less	10	12	13	14	16	17	20	23	25	30	35
Compressive strength at 10% linear deformation, kPa, not less	40	60	70	80	100	100	120	140	160	200	250
	60	100	120	150	180	160	200	220	250	300	350
	*	*	*	*	100	*	*	*	*	*	*
Thermal conductivity of slabs in a dry state at a temperature of (10 ± 1) o C (283 K), W/(m×K), no more	0,041	0,040	0,039	0,038	0,036	0,037	0,036	0,035	0,034	0,035	0,036
Thermal conductivity of slabs in a dry state at a temperature of (25 ± 5) o C (298 K), W/(m×K), no more	0,044	0,042	0,041	0,040	0,038	0,039	0,038	0,037	0,036	0,037	0,038
	5,0	5,0	3,0	3,0	2,0	3,0	2,0	2,0	2,0	2,0	2,0
	4,0	4,0	3,0	3,0	1,0	2,0	2,0	2,0	2.0	2,0	2,0
	4	4	4	4	1	4	4	4	4	4	4

* The indicator is not standardized

Table 2. Physical and mechanical properties of polystyrene foam boards of the RG type (graphite-containing façade)

Indicator name	The value of the indicator for brand slabs
Indicator name	PPS15F	PPS20 F
Density, kg/m 3, not less	15	20
	70	100
Bending strength, kPa, not less	140	250
Tensile strength in the direction perpendicular to the surface, kPa, not less	100	150
(10 ± 1) o C (283 K), W/(m×K), no more	0,032	0,031
Thermal conductivity of slabs in a dry state at a temperature (25 ± 5) o C (298 K), W/(m×K), no more	0,034	0,033
Humidity,% by mass, no more	2	2
Water absorption in 24 hours, % by volume, no more	4	3
Self-combustion time, s, no more	1	1

Table 3. Physical and mechanical properties of T-type polystyrene foam boards (thermoformed)

Indicator name	The value of the indicator for brand slabs
Indicator name	PPP 15	PPP 20	PPP 25	PPP 30	PPP 35	PPP 40	PPP 45
Density, kg/m 3, not less	15	20	25	30	35	40	45
Compressive strength at 10% linear deformation, kPa, not less	100	150	180	200	250	300	350
Bending strength, kPa, not less	180	200	250	400	450	500	550
Thermal conductivity of slabs in a dry state at a temperature of (10 ± 1) o C (283 K), W/(m×K), no more	0,037	0,036	0,036	0,035	0,036	0,036	0,036
Thermal conductivity of slabs in a dry state at a temperature of (25 ± 5) o C (298 K), W/(m×K), no more	0,039	0,038	0,038	0,037	0,038	0,038	0,038
Humidity,% by mass, no more	1.0	1,0	1,0	1,0	1,0	1,0	1,0
Water absorption in 24 hours, % by volume, no more	1,5	1,5	1,0	1.0	0,5	0,3	0,2
Self-combustion time, s, no more	4	4	4	4	4	4	4

Depending on the shape of the slab, two types are offered:

slabs with a rectangular side edge;
slabs with a selected or quarter-shaped side edge.

GOST has introduced special grades of slabs intended for use in thermal insulation in façade thermal insulation composite systems with external plaster layers.

2. Ease of use of GOST. Now the brand is logically designated by the minimum permissible density of the slabs. Test methods are more clearly stated in GOST and do not refer to other GOSTs, for example GOST 17177-94 “Thermal insulating materials and products for construction. Test methods".

3. Recognition of the mandatory presence of fire retardant additives in building thermal insulation boards, which ensures compliance with fire safety requirements during storage and installation of polystyrene foam boards.

Differences between GOST 15588-2014 and GOST R 56148-2014 (EN 13163:2009), harmonized with European

The European standard EN 13163-2009 provides levels, classes and values of product indicators by which a manufacturer can manufacture and label its products. All responsibility in determining the quality of the products presented lies with the manufacturer. The Russian standard clearly defines the indicators for each brand and the limits of permissible deviations for geometric indicators, understandable to both the designer and the manufacturer.

The European standard uses product testing methods based on European standards, directives, and methods. In the Russian standard, all methods are national, well-known, and laboratories are equipped with appropriate equipment to conduct such studies.

In accordance with the European standard, it is possible to produce products with low strength and thermal characteristics. The Russian standard excludes this possibility, and presents brands that provide only “high” quality. This is done to ensure that there are no products of inadequate quality on the market, manufactured in accordance with GOST.

Diversity – a wealth of choice

In preparing the new standards, the entire experience of developing many industry normative and technical documents at various levels was used.

All presented standards according to Russian legislation are voluntary for use. They become mandatory only if the parties agree on an order for the production of products according to a particular standard. According to 184 Federal Law “On Technical Regulation”, the designer must have an alternative choice of the regulatory framework in force in the country.

Thus, Russian manufacturers products made from expanded polystyrene who wish to enter the EU market can manufacture products and receive a Certificate of Conformity European standard. If on the Russian market a designer wants to use domestic products that meet European standards, then now he has such an opportunity.

In other cases, designers, builders and production workers will use proven methods and clear indicators of the Russian GOST, recognized by the Russian scientific, construction and research environment.

The use of new GOSTs will definitely improve the quality indicators of expanded polystyrene products and increase the level of energy efficiency in construction.

The Association of Manufacturers and Suppliers of Expanded Polystyrene, being the developer of standards and recommendations, an expert center in this field, will also in the future act as a guarantor of the quality of products manufactured by manufacturers, assigning their products the appropriate insignia.

Based on materials from the website epsrussia.ru

INTERSTATE STANDARD

FOAM POLYSTYRENE PLATES

TECHNICAL CONDITIONS

Official publication

Standardinform

INTERSTATE STANDARD

FOAM POLYSTYRENE PLATES

Specifications

GOST

15588-86

Polystyrene foam boards. Specifications

GOST 15588-70

MKS 83.140 91.100.99 OKP 22 4440

By Decree of the USSR State Committee for Construction Affairs dated June 17, 1986 No. 80, the introduction date was set

This standard applies to expanded polystyrene boards manufactured by a non-press method from suspension foaming polystyrene with or without the addition of a fire retardant.

The slabs are intended for thermal insulation as the middle layer of building envelopes and industrial equipment in the absence of contact of the slabs with the interior. The temperature of insulated surfaces should not be higher than 80 °C.

Plates belong to the group of combustible materials.

The standard corresponds to ST SEV 5068-85 in the part specified in the appendix.

1. TYPES AND SIZES

1.1. Plates, depending on the presence of fire retardant, are made of two types:

PSB-S - with fire retardant;

PSB - without fire retardant.

1.2. Plates, depending on the maximum density value, are divided into grades: 15, 25, 35 and 50.

1.3. The nominal dimensions of the slabs should be:

along the length - from 900 to 5000 mm with an interval of 50 mm;

in width - from 500 to 1300 mm with an interval of 50 mm;

thickness - from 20 to 500 mm with an interval of 10 mm.

By agreement between the manufacturer and the consumer, it is allowed to produce slabs of other sizes.

1.4. Maximum deviations from nominal dimensions should not exceed, mm:

for slabs up to 1000 inc. length...................±5;

» » » over 1000 to 2000 inclusive...........±7.5;

» » » over 2000 ......................±10;

Official publication

Reproduction is prohibited

Reissue. August 2005

in width

for slabs up to 1000 inclusive width......±5;

» » » over 1000...................± 7.5;

by thickness

for slabs up to 50 thick...................±2;

» » » over 50...................±3.

1.5. The symbol of the slabs must consist of a letter designation of the type of slab, brand, dimensions of length, width and thickness in millimeters and the designation of this standard.

An example of the symbol for slabs made of foamed polystyrene with the addition of fire retardant grade 15, 900 mm long, 500 mm wide and 50 mm thick:

PSB-S-15-900 x 500 x 50 GOST 15588-86

The same, slabs of foamed polystyrene without fire retardant grade 15, length 900 mm, width 500 mm and thickness 50 mm:

PSB-15-900 x 500 x 50 GOST 15588-86

2. TECHNICAL REQUIREMENTS

2.1. Plates must be manufactured in accordance with the requirements of this standard and according to technological regulations approved in the prescribed manner.

2.2. For the manufacture of boards, foaming polystyrene containing a blowing agent (isopentane or pentane) and a residual monomer (styrene) is used.

Polystyrene used for the manufacture of slabs must meet the requirements of regulatory and technical documentation for the specified material.

2.4. The slabs must have the correct geometric shape. The deviation from the flatness of the slab edge should not be more than 3 mm per 500 mm of edge length.

The difference between the diagonals should not exceed, mm:

for slabs up to 1000 in length......................5

» » » over 1000 to 2000................7

» » » over 2000....................... 13

2.5. The physical and mechanical properties of the slabs must comply with the standards specified in the table.

	Standard for slab grades
Indicator name

Density, kg/m 3		From 15.1 to 25.0	From 25.1 to 35.0	From 35.1 to 50.0	From 15.1 to 25.0	From 25.1 to 35.0	From 35 to 50.0
Compressive strength at 10% linear deformation, MPa, not less
Bending strength, MPa, not less
Thermal conductivity in dry condition at (25 ± 5) °С, W/(m K), no more
Self-combustion time of PSB-S type slabs, s, no more
Humidity, %, no more
Water absorption in 24 hours, % by volume, no more

2.6. If slabs do not meet at least one of the requirements for a given brand, except density, they should be assigned to a brand with a lower density.

3. ACCEPTANCE RULES

3.2. The quality of the slabs is checked according to all indicators established by this standard by conducting acceptance and periodic tests.

3.3. During acceptance tests, the following are checked: linear dimensions, correctness of geometric shape (deviation from flatness, difference in lengths of diagonals), appearance (bluntness of edges and corners, bevels on the sides of blunt corners, convexities or depressions), density, compressive strength at 10% deformation, flexural strength, humidity, water absorption and self-burning time. It is allowed, by agreement with the consumer, to determine water absorption at least once a quarter.

Thermal conductivity is determined periodically when changing technology or raw materials used, but at least once every 6 months.

3.4. To check the compliance of the slabs with the requirements of this standard in terms of linear dimensions, correct geometric shape and appearance, 10 slabs are selected from a batch with a volume of up to 200 m3, and 20 slabs from a batch with a volume of over 200 m3.

3.5. To check the physical and mechanical parameters, three slabs out of 10 or 5 out of 20 slabs that have passed the test are selected. 3.4.

3.6. If the test results are unsatisfactory for at least one of the indicators, a double number of slabs selected from the same batch is retested for this indicator.

If the results of repeated tests are unsatisfactory, the batch of slabs is not subject to acceptance.

For a batch of products that is not accepted based on the results of control of linear dimensions, correctness of geometric shape and appearance, it is allowed to apply continuous control, while the products are controlled according to the indicator for which the batch was not accepted.

4. TEST METHODS

4.1. Before making test samples, slabs must be kept for at least 3 hours at a temperature of (22 + 5) °C.

Testing of samples is carried out in a room with air temperature (22 + 5) °C and relative humidity (50 + 5)% after preliminary exposure to them under the same conditions for at least 5 hours.

The length and width are taken as the arithmetic mean of the slab measurements.

4.3. The thickness of the slabs is measured with a caliper according to GOST 166-89 in 8 places at a distance of 50 mm from the side edges of the slab: 4 points in the middle of the length and width of the slab and 4 points at the corners of the slab at a distance of 50 mm from the intersection of the side edges. Measurement error - no more than 0.1 mm.

The thickness is taken as the arithmetic mean of the slab measurements.

4.4. To determine the difference between the diagonals, measure the lengths of two diagonals on the largest face of the slab using a tape measure according to GOST 7502-98.

The measurement result is taken to be the difference between the diagonals of the slab.

4.5. The bluntness of the ribs and corners is determined with a measuring instrument with an error of no more than 1.0 mm.

4.6. The length, width and height (depth) of the bulges or depressions of the slabs are measured with a double-sided caliper with a depth gauge in accordance with GOST 162-90.

The largest of the measured gap values is taken as an indicator of the non-flatness of the slab surface.

4.8. Determination of density

The essence of the method is to determine the mass per unit volume of the slab.

4.8.1. Equipment

Scales with an error of no more than 5 g.

Ruler according to GOST 427-75 for measuring length and width.

Vernier calipers according to GOST 166-89 for measuring thickness.

4.8.2. Carrying out the test

The slabs selected according to clause 3.5 are weighed with an error of no more than 0.5%. Then the geometric dimensions of the slabs are determined in accordance with paragraphs. 4.2 and 4.3.

4.8.3. Processing the results

The density of the slab (p) is calculated in kilograms per cubic meter using the formula

P_K(1 + 0.011G) ’ (’

where t is the mass of the slab, kg;

V is the volume of the slab, m 3;

W - slab humidity, %.

The arithmetic mean of all determinations, rounded to 0.1 kg/m3, is taken as the test result.

4.9. Humidity determination

The essence of the method is to determine the difference in the mass of the sample before and after drying at a given temperature.

4.9.1. Sampling

To determine the humidity, three samples are cut from the slabs selected according to clause 3.5: one from the middle and two at a distance of 50 mm from the edge of the slab. The sample dimensions should be [(50 x 50 x 50) + 0.5] mm. If the thickness of the slab from which the samples are made is less than 50 mm, then the height of the sample is taken equal to the thickness of the slab.

4.9.2. Equipment

Scales with an error of no more than 0.01 g.

Drying cabinet with a heating temperature of up to 100 °C and ensuring maintenance of the set temperature with an error of no more than 2 °C.

Desiccator.

Anhydrous calcium chloride.

4.9.3. Carrying out the test

The samples are weighed with an error of no more than 0.01 g, dried in an oven at a temperature of (60 + 2) °C for 3 hours, and then cooled in a desiccator with calcium chloride for 0.5 hours, after which the samples are weighed with that same error.

4.9.4. Processing the results

The percentage moisture content W of the sample is calculated using the formula

■ 100,

(2)

where m is the mass of the sample before drying, g; mn\ is the mass of the sample after drying, g.

The arithmetic mean of parallel moisture determinations, rounded to 1.0%, is taken as the test result.

4.10. Determination of compressive strength at 10% linear deformation

The essence of the method is to determine the magnitude of the compressive force that causes deformation of the sample along the thickness by 10% under given test conditions.

4.10.1. Sampling

To determine the compressive strength at 10% linear deformation from slabs selected according to and. 3.5, cut out three samples of size [(50 x 50 x 50) + 0.5] mm (one from the middle and two at a distance of 50 mm from the edge of the slab).

If the thickness of the slab from which the samples are made is less than 50 mm, then the height of the samples is taken to be equal to the thickness of the slab.

It is allowed to use samples on which the moisture content of the slabs was determined.

4.10.2. Equipment

A testing machine that provides load measurement with an error not exceeding 1% of the compressive force value, and a constant sample loading rate (5-10) mm/min. The testing machine must have a self-aligning support and a clamp movement measurement system that provides strain measurement with an error of no more than 0.2 mm.

Metal ruler according to GOST 427-75.

4.10.3. Carrying out the test

4.10.4. Processing the results

Compressive strength at 10% linear deformation L szh in megapascals is calculated using the formula

where P is the load at 10% linear deformation, I;

/ - sample length, m; b - sample width, m.

The test result is taken as the arithmetic mean value of parallel determinations of the strength of the slabs, rounded to 0.01 MPa.

4.11. Determination of bending strength

The essence of the method is to determine the magnitude of the force when bending a sample, causing its destruction under given test conditions.

4.11.1. Sampling

To determine the tensile strength in bending from slabs selected according to and. 3.5, cut out two samples of size [(250 x 40 x 40) + 1] mm (one from the middle and one at a distance of 50 mm from the edge of the slab). If the selected slabs have a thickness of less than 40 mm, then the height of the sample should be equal to the thickness of the slab.

4.11.2. Equipment, equipment, tools

A testing machine that provides a sample loading rate of (5-10) mm/min and is equipped with a device with a loading identifier and supports having a radius of curvature (6 + 0.1) mm. The distance between the axes of the supports should be (200 + 1) mm.

4.11.3. Carrying out the test

Before testing, the width and thickness of the sample are measured at at least three points with an error of no more than 0.1 mm.

At the moment of sample failure, the breaking load is recorded.

4.11.4. Processing the results

Bending strength of sample 7? south in megapascals is calculated using the formula

(3)

/ - distance between the axes of the supports, m; b - sample width, m; h - sample thickness, m.

The arithmetic mean value of parallel strength determinations, rounded to 0.01 MPa, is taken as the test result.

4.12. Thermal conductivity is determined according to GOST 7076-99 on samples cut one at a time from the middle of the slabs selected according to clause 3.5.

4.13. Determination of self-burning time

The essence of the method is to determine the time during which the sample continues to burn after the fire source is removed.

4.13.1. Sampling

To determine the self-burning time, one sample is cut out from the middle of the slabs selected according to clause 3.5. The sample dimensions should be [(140 x 30 x 10) + 1] mm.

4.13.2. Equipment and materials

Desiccator according to GOST 25336-82.

Anhydrous calcium chloride according to TU 6-09-4711-81.

Gas or alcohol burner according to GOST 21204-97.

Stopwatch of 2nd accuracy class.

Vernier calipers according to GOST 166-89 or metal ruler according to GOST 427-75.

4.13.3. Carrying out the test

Before testing, the samples are dried in an oven at a temperature of (60 1 2) °C for 3 hours, then cooled in a desiccator with calcium chloride for 0.5 hours. After this, the sample is fixed in a vertical position on a tripod and kept in a burner flame for for 4 s. The height of the burner flame from the end of the wick should be about 50 mm, and the distance from the sample to the burner wick should be about 10 mm. Then the burner is removed and the time during which the sample continues to burn is recorded using a stopwatch.

The result is taken as the arithmetic mean of the sample test results.

4.14. Determination of water absorption

The essence of the method is to determine the mass of water absorbed by samples of dry material after they are completely immersed in distilled water and kept in it for a given time.

4.14.1. Equipment and materials

Technical scales with a weighing error of no more than 0.01 g.

Drying cabinet with a heating temperature of up to 100 °C, ensuring maintenance of the set temperature with an error of no more than 2 °C.

Desiccator according to GOST 25336-82.

A bathtub with a mesh stand and weight.

Anhydrous calcium chloride according to TU 6-09-4711-81.

Distilled water according to GOST 6709-72.

Vernier calipers according to GOST 166-89.

4.14.2. Sampling

To determine water absorption from slabs selected according to and. 3.5, cut one sample at a time with dimensions [(50 x 50 x 50) + 0.5] mm. If the height of the sample is less than 50 mm, then the height of the sample is taken to be equal to the thickness of the slab. The length, width and thickness of the samples are measured at at least three points with an error of no more than 0.1 mm.

4.14.3. Before testing, samples are dried at a temperature of (60 + 2) °C for at least 3 hours, then cooled in a desiccator for at least 0.5 hours and weighed with an error of 0.01 g.

The samples are placed in a bath on a mesh stand and their position is fixed with a mesh weight. Then water with a temperature of (22 + 5) °C is poured into the bath so that the water level is at least 20 mm above the mesh load.

24 hours after adding water, the samples are removed, wiped with filter paper and weighed with an error of no more than 0.01 g.

4.14.4. Processing test results

Water absorption W B as a percentage by volume is calculated using the formula

100,

where m is the mass of the sample after keeping it in water, g;

t () - mass of the sample before immersion in water, g;

V - sample volume, cm 3; у в - density of water, g/cm3.

The arithmetic mean value of parallel determinations of water absorption of slabs, rounded to 0.1%, is taken as the test result.

5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

The height of the formed package should not exceed 0.9 m. With a slab thickness of 500 mm, the package is formed from two slabs.

For the manufacture of packaging means, a tape should be used that has a breaking load of at least 200 N (based on the base).

5.2. On the side edge of the slab or package there must be a marking containing the quality control department stamp of the manufacturer, the type and brand of the slab.

5.3. Transport marking must be carried out in accordance with GOST 14192-96.

Each accepted batch of slabs is accompanied by a quality document, which indicates: the name of the manufacturer or its trademark; date of manufacture;

product name and batch number; brand and type of slabs;

number of slabs in a batch and in each package; designation of this standard; quality control stamp; test results;

image of the state Quality Mark for products to which it has been assigned in the prescribed manner.

5.4. Plates and packages are transported by all types of transport in covered vehicles in accordance with the rules for the transportation of goods in force for each type of transport.

5.5. For transportation by railway The slabs are supplied formed into packages. Slabs of the same type, brand and size are placed in packages. The slabs must be laid flat.

Dispatch by rail - by carload. The car is loaded in packages in three tiers, loading it to its full capacity with unpacked slabs.

5.6. The slabs are sent to the Far North regions in accordance with GOST 15846-2002, while the slabs are packaged in wooden containers in accordance with GOST 18051-83.

5.7. The slabs must be stored in covered warehouses. Storage under a canopy is allowed, protecting the slabs from exposure to precipitation and sun rays. When stored under a canopy, the slabs must be placed on supports, and the height of the stack should not exceed 3 m.

6. INSTRUCTIONS FOR USE

6.1. Plates must be used in accordance with the requirements of SNiP II-26-76 and other documents approved in the prescribed manner.

7. MANUFACTURER WARRANTY

7.1. The manufacturer guarantees compliance of the slabs with the requirements of this standard provided that the consumer complies with the conditions of transportation, storage and instructions for use.

7.2. The guaranteed shelf life of the slabs is 12 months from the date of manufacture.

APPLICATION

Information

Information data on compliance with GOST 15588-86 and ST SEV 5068-85

Introductory part of GOST Section. 1 GOST 15588 P. 2.3 GOST 15588-GG 2.4 GOST 15588-GG 2.5 GOST 15588-GG 2.6 GOST 15588-GG 3.1 GOST 15588-GG 3.3 GOST 15588-GG 3.4 GOST 15588-GG 3.5 GOST 15588-

15588-86 corresponds to the introductory part of ST SEV 5068-85. -86 corresponds to section. 1 ST SEV 5068-85.

86 corresponds to clause 2.2 of ST SEV 5068-85.

86 corresponds to clause 2.1 of ST SEV 5068-85.

86 corresponds to clause 2.3 of ST SEV 5068-85.

86 corresponds to clause 2.4 of ST SEV 5068-85.

86 corresponds to clause 3.1 ST SEV 5068-85.

86 corresponds to paragraphs. 3.5 and 3.6 ST SEV 5068-85.

86 corresponds to clause 3.3 of ST SEV 5068-85.

86 corresponds to clause 3.4 of ST SEV 5068-85.

Editor M.I. Maksimova Technical editor V.N. Prusakova Corrector V.I. Varentsova Computer layout I.A. Naleykina

Delivered for recruitment on 08/22/2005. Signed for publication on August 30, 2005. Format 60 x 84*/8 - Offset paper. Times typeface. Offset printing. Uel. pech.l. 1.40. Academician-ed.l. 0.90. Circulation 100 copies. Zach. 570. Since 1812.

FSUE "Standartinform", 123995 Moscow, Granatny lane, 4.

Typed into FSUE “Standardinform” on a PC

Printed in the branch of FSUE "Standardinform" - type. "Moscow Printer", 105062 Moscow, Lyalin lane, 6.

GOST 15588-86

Group Zh15

INTERSTATE STANDARD

FOAM POLYSTYRENE PLATES

Specifications

Polystyrene foam boards. Specifications

91.100.99
OKP 22 4440

Date of introduction 1986-07-01

By Decree of the USSR State Committee for Construction Affairs dated June 17, 1986 N 80, the implementation date was set at 07/01/86

INSTEAD GOST 15588-70

REISSUE. August 2005

This standard applies to expanded polystyrene boards manufactured in a non-press process from suspension foaming polystyrene with or without the addition of a fire retardant.

The slabs are intended for thermal insulation as the middle layer of building envelopes and industrial equipment in the absence of contact of the slabs with the interior. The temperature of insulated surfaces should not be higher than 80 °C.

Plates belong to the group of combustible materials.

The standard corresponds to ST SEV 5068-85 in the part specified in the appendix.

1. TYPES AND SIZES

1.1. Plates, depending on the presence of fire retardant, are made of two types:

PSB-S - with fire retardant;

PSB - without fire retardant.

1.2. Plates, depending on the maximum density value, are divided into grades: 15, 25, 35 and 50.

1.3. The nominal dimensions of the slabs should be:

along the length - from 900 to 5000 mm with an interval of 50 mm;

in width - from 500 to 1300 mm with an interval of 50 mm;

thickness - from 20 to 500 mm with an interval of 10 mm.

By agreement between the manufacturer and the consumer, it is allowed to produce slabs of other sizes.

1.4. Maximum deviations from nominal dimensions should not exceed, mm:

for slabs up to 1000 inclusive length.

over 1000 to 2000 inclusive.

in width

for slabs up to 1000 inclusive width.

by thickness

for slabs up to 50 thick

1.5. The symbol of the slabs must consist of a letter designation of the type of slab, brand, dimensions of length, width and thickness in millimeters and the designation of this standard.

An example of a symbol for slabs made of foamed polystyrene with the addition of fire retardant grade 15, 900 mm long, 500 mm wide and 50 mm thick:

PSB-S-15-900x500x50 GOST 15588-86

The same, slabs of foamed polystyrene without fire retardant grade 15, length 900 mm, width 500 mm and thickness 50 mm:

PSB-15-900x500x50 GOST 15588-86

2. TECHNICAL REQUIREMENTS

2.1. Plates must be manufactured in accordance with the requirements of this standard and according to technological regulations approved in the prescribed manner.

2.2. For the manufacture of boards, foaming polystyrene containing a blowing agent (isopentane or pentane) and a residual monomer (styrene) is used.

Polystyrene used for the manufacture of slabs must meet the requirements of regulatory and technical documentation for the specified material.

2.4. The slabs must have the correct geometric shape. The deviation from the flatness of the slab edge should not be more than 3 mm per 500 mm of edge length.

The difference between the diagonals should not exceed, mm:


	for slabs up to 1000 long
				over 1000 to 2000

2.5. The physical and mechanical properties of the slabs must comply with the standards specified in the table.


Indicator name	Standard for slab grades


Density, kg/m		From 15.1 to 25.0	From 25.1 to 35.0	From 35.1 to 50.0	From 15.1 to 25.0	From 25.1 to 35.0	From 35 up to 50.0
Compressive strength at 10% linear deformation, MPa, not less
Bending strength, MPa, not less
Thermal conductivity in dry condition at (25±5) °С, W/(m K), no more
Self-combustion time of PSB-S type slabs, s, no more
Humidity, %, no more
Water absorption in 24 hours, % by volume, no more

2.6. If slabs do not meet at least one of the requirements for a given brand, except density, they should be assigned to a brand with a lower density.

3. ACCEPTANCE RULES

3.2. The quality of the slabs is checked according to all indicators established by this standard by conducting acceptance and periodic tests.

3.3. During acceptance tests, the following are checked: linear dimensions, correct geometric shape (deviation from flatness, difference in lengths of diagonals), appearance (bluntness of edges and corners, bevels on the sides of blunt corners, convexities or depressions), density, compressive strength at 10% deformation, flexural strength, humidity, water absorption and self-burning time. It is allowed, by agreement with the consumer, to determine water absorption at least once a quarter.

Thermal conductivity is determined periodically when changing technology or raw materials used, but at least once every 6 months.

3.4. To check the compliance of the slabs with the requirements of this standard in terms of linear dimensions, correct geometric shape and appearance, 10 slabs are selected from a batch with a volume of up to 200 m3, and 20 slabs from a batch with a volume of over 200 m3.

3.5. To check the physical and mechanical properties, three slabs are selected from 10 or 5 from 20 slabs that have passed the test according to clause 3.4.

3.6. If the test results are unsatisfactory for at least one of the indicators, a double number of slabs selected from the same batch is retested for this indicator.

If the results of repeated tests are unsatisfactory, the batch of slabs is not subject to acceptance.

4. TEST METHODS

4.1. Before making test samples, slabs must be kept for at least 3 hours at a temperature of (22±5) °C.

Testing of samples is carried out in a room with air temperature (22±5) °C and relative humidity (50±5)% after preliminary exposure to the same conditions for at least 5 hours.

The length and width are taken as the arithmetic mean of the slab measurements.

The thickness is taken as the arithmetic mean of the slab measurements.

4.4. To determine the difference between the diagonals, measure the lengths of two diagonals on the largest face of the slab using a tape measure according to GOST 7502-98.

The measurement result is taken to be the difference between the diagonals of the slab.

4.5. The bluntness of the ribs and corners is determined with a measuring instrument with an error of no more than 1.0 mm.

4.6. The length, width and height (depth) of the bulges or depressions of the slabs are measured with a double-sided caliper with a depth gauge according to GOST 162-90.

The largest of the measured gap values is taken as an indicator of the non-flatness of the slab surface.

4.8. Determination of density

The essence of the method is to determine the mass per unit volume of the slab.

4.8.1. Equipment

Scales with an error of no more than 5 g.

Ruler according to GOST 427-75 for measuring length and width.

Vernier calipers according to GOST 166-89 for measuring thickness.

4.8.2. Carrying out the test

The slabs selected according to clause 3.5 are weighed with an error of no more than 0.5%. Then the geometric dimensions of the slabs are determined in accordance with paragraphs 4.2 and 4.3.

4.8.3. Processing the results

The density of the slab () is calculated in kilograms per cubic meter using the formula

where is the mass of the plate, kg;

- volume of the slab, m;

- slab humidity, %.

The test result is taken as the arithmetic mean of all determinations, rounded to 0.1 kg/m.

4.9. Humidity determination

The essence of the method is to determine the difference in the mass of the sample before and after drying at a given temperature.

4.9.1. Sampling

To determine the humidity, three samples are cut from the slabs selected according to clause 3.5: one from the middle and two at a distance of 50 mm from the edge of the slab. The sample dimensions should be [(50x50x50)±0.5] mm. If the thickness of the slab from which the samples are made is less than 50 mm, then the height of the sample is taken equal to the thickness of the slab.

4.9.2. Equipment

Scales with an error of no more than 0.01 g.

Drying cabinet with a heating temperature of up to 100 °C and ensuring maintenance of the set temperature with an error of no more than 2 °C.

Desiccator.

Anhydrous calcium chloride.

4.9.3. Carrying out the test

The samples are weighed with an error of no more than 0.01 g, dried in an oven at a temperature of (60±2) °C for 3 hours, and then cooled in a desiccator with calcium chloride for 0.5 hours, after which the samples are weighed with that same error.

4.9.4. Processing the results

The percentage moisture content of the sample is calculated using the formula

where is the mass of the sample before drying, g;

- mass of the sample after drying, g.

The test result is taken as the arithmetic mean of parallel moisture determinations, rounded to 1.0%.

4.10. Determination of compressive strength at 10% linear deformation

The essence of the method is to determine the magnitude of the compressive force that causes deformation of the sample along the thickness by 10% under given test conditions.

4.10.1. Sampling

To determine the compressive strength at 10% linear deformation, three samples of size [(50x50x50)±0.5] mm are cut from the slabs selected according to clause 3.5 (one from the middle and two at a distance of 50 mm from the edge of the slab) .

If the thickness of the slab from which the samples are made is less than 50 mm, then the height of the samples is taken to be equal to the thickness of the slab.

It is allowed to use samples on which the moisture content of the slabs was determined.

4.10.2 Hardware

A testing machine that provides load measurement with an error not exceeding 1% of the compressive force value, and a constant sample loading rate (5-10) mm/min. The testing machine must have a self-aligning support and a clamp movement measurement system that provides strain measurement with an error of no more than 0.2 mm.

Metal ruler according to GOST 427-75.

4.10.3. Carrying out the test

4.10.4. Processing the results

Compressive strength at 10% linear deformation in megapascals is calculated using the formula

where is the load at 10% linear deformation, H;

- sample length, m;

- sample width, m.

The test result is taken as the arithmetic mean of parallel determinations of the strength of the slabs, rounded to 0.01 MPa.

4.11. Determination of bending strength

The essence of the method is to determine the magnitude of the force when bending a sample, causing its destruction under given test conditions.

4.11.1. Sampling

4.11.2. Equipment, equipment, tools

Vernier calipers according to GOST 166-89 GOST 427-75.

4.11.3. Carrying out the test

Before testing, the width and thickness of the sample are measured at at least three points with an error of no more than 0.1 mm.

At the moment of sample failure, the breaking load is recorded.

4.11.4. Processing the results

The bending strength of the sample in megapascals is calculated using the formula

where is the breaking load, H;

- distance between support axes, m;

- sample width, m;

- sample thickness, m.

The arithmetic mean of parallel strength determinations, rounded to 0.01 MPa, is taken as the test result.

4.12. Thermal conductivity is determined according to GOST 7076-99 on samples cut one at a time from the middle of the slabs selected according to clause 3.5.

4.13. Determination of self-burning time

The essence of the method is to determine the time during which the sample continues to burn after the fire source is removed.

4.13.1. Sampling

To determine the self-burning time, one sample is cut out from the middle of the slabs selected according to clause 3.5. The dimensions of the sample should be [(140x30x10)±1] mm.

4.13.2. Equipment and materials

Desiccator according to GOST 25336-82.

Anhydrous calcium chloride according to TU 6-09-4711-81.

Gas or alcohol burner according to GOST 21204-97.

Stopwatch of 2nd accuracy class.

Vernier calipers according to GOST 166-89 or metal ruler according to GOST 427-75.

4.13.3. Carrying out the test

Before testing, the samples are dried in an oven at a temperature of (60±2) °C for 3 hours, then cooled in a desiccator with calcium chloride for 0.5 hours. After this, the sample is fixed in a vertical position on a tripod and kept in a burner flame for for 4 s. The height of the burner flame from the end of the wick should be about 50 mm, and the distance from the sample to the burner wick should be about 10 mm. Then the burner is removed and the time during which the sample continues to burn is recorded using a stopwatch.

The result is taken as the arithmetic mean of the sample test results.

4.14. Determination of water absorption

The essence of the method is to determine the mass of water absorbed by samples of dry material after they are completely immersed in distilled water and kept in it for a given time.

4.14.1. Equipment and materials

Technical scales with a weighing error of no more than 0.01 g.

Drying cabinet with a heating temperature of up to 100 °C, ensuring maintenance of the set temperature with an error of no more than 2 °C.

Desiccator according to GOST 25336-82.

A bathtub with a mesh stand and weight.

Anhydrous calcium chloride according to TU 6-09-4711-81.

Distilled water according to GOST 6709-72.

Vernier calipers according to GOST 166-89.

4.14.2. Sampling

4.14.3. Before testing, samples are dried at a temperature of (60±2) °C for at least 3 hours, then cooled in a desiccator for at least 0.5 hours and weighed with an error of 0.01 g.

The samples are placed in a bath on a mesh stand and their position is fixed with a mesh weight. Then water with a temperature of (22±5) °C is poured into the bath so that the water level is at least 20 mm above the mesh load.

24 hours after adding water, the samples are removed, wiped with filter paper and weighed with an error of no more than 0.01 g.

4.14.4. Processing test results

Water absorption as a percentage by volume is calculated using the formula

where is the mass of the sample after keeping it in water, g;

- mass of the sample before immersion in water, g;

- sample volume, cm;

- density of water, g/cm.

The test result is taken as the arithmetic mean of parallel determinations of water absorption of slabs, rounded to 0.1%.

5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

5.1. The slabs are supplied packed in transport bags or unpacked. When forming a package, the rules for the transportation of goods approved by the relevant departments and the requirements of this standard must be observed.

The height of the formed package should not exceed 0.9 m. With a slab thickness of 500 mm, the package is formed from two slabs.

For the manufacture of packaging means, a tape having a breaking load of at least 200 N (based on the base) should be used.

5.2. On the side edge of the slab or package there must be a marking containing the quality control department stamp of the manufacturer, the type and brand of the slab.

5.3. Transport marking must be carried out in accordance with GOST 14192-96.

Each accepted batch of slabs is accompanied by a quality document, which indicates:

name of the manufacturer or its trademark;

date of manufacture;

product name and batch number;

brand and type of slabs;

number of slabs in a batch and in each package;

designation of this standard;

quality control stamp;

test results;

image of the state Quality Mark for products to which it has been assigned in the prescribed manner.

5.4. Plates and packages are transported by all types of transport in covered vehicles in accordance with the rules for the transportation of goods in force for each type of transport.

5.5. For transportation by rail, the slabs are supplied formed into packages. Slabs of the same type, brand and size are placed in packages. The slabs must be laid flat.

Dispatch by rail - by carload. The car is loaded in packages in three tiers, loading it to its full capacity with unpacked slabs.

5.6. The slabs are sent to the Far North regions in accordance with GOST 15846-2002, while the slabs are packaged in wooden containers in accordance with GOST 18051-83.

5.7. The slabs must be stored in covered warehouses. Storage under a canopy is allowed, protecting the slabs from exposure to precipitation and sunlight. When stored under a canopy, the slabs must be placed on supports, and the height of the stack should not exceed 3 m.

6. INSTRUCTIONS FOR USE

6.1. Plates must be used in accordance with the requirements of SNiP II-26-76 and other documents approved in the prescribed manner.

7. MANUFACTURER WARRANTY

7.2. The guaranteed shelf life of the slabs is 12 months from the date of manufacture.

Appendix (reference). Information data on compliance with GOST 15588-86 and ST SEV 5068-85

Application
Information

The introductory part of GOST 15588-86 corresponds to the introductory part of ST SEV 5068-85.

Sec. 1 GOST 15588-86 corresponds to section. 1 ST SEV 5068-85.

Clause 2.3 of GOST 15588-86 corresponds to clause 2.2 of ST SEV 5068-85.

Clause 2.4 of GOST 15588-86 corresponds to clause 2.1 of ST SEV 5068-85.

Clause 2.5 of GOST 15588-86 corresponds to clause 2.3 of ST SEV 5068-85.

Clause 2.6 of GOST 15588-86 corresponds to clause 2.4 of ST SEV 5068-85.

Clause 3.1 of GOST 15588-86 corresponds to clause 3.1 of ST SEV 5068-85.

Clause 3.3 of GOST 15588-86 corresponds to clauses 3.5 and 3.6 of ST SEV 5068-85.

Clause 3.4 of GOST 15588-86 corresponds to clause 3.3 of ST SEV 5068-85.

Clause 3.5 of GOST 15588-86 corresponds to clause 3.4 of ST SEV 5068-85.

Electronic document text
prepared by Kodeks JSC and verified against:
official publication
M.: Standartinform, 2005

New guests - qualitatively new polystyrene foam. New GOSTs - qualitatively new expanded polystyrene Semi-rigid mineral wool boards according to GOST 15588 86

Prerequisites for the development of new standards

Fundamental differences between the new GOST 15588-2014 and 15588-86

Differences between GOST 15588-2014 and GOST R 56148-2014 (EN 13163:2009), harmonized with European

Diversity – a wealth of choice

FOAM POLYSTYRENE PLATES

TECHNICAL CONDITIONS

GOST

15588-86

3. ACCEPTANCE RULES

4. TEST METHODS

■ 100,

(2)

(3)

100,

1. TYPES AND SIZES

2. TECHNICAL REQUIREMENTS

3. ACCEPTANCE RULES

4. TEST METHODS

5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

6. INSTRUCTIONS FOR USE

7. MANUFACTURER WARRANTY

Appendix (reference). Information data on compliance with GOST 15588-86 and ST SEV 5068-85

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