Floors made of autoclaved cellular concrete. Using aerated concrete floor slab

When building houses from aerated concrete, it becomes necessary to choose the type of floors. It is necessary to ensure not only the strength of the structure itself, but also to resolve a number of other issues related to the cost of construction and installation work, the time of work, and compliance with design solutions.

The main function of floors is to redistribute the weight of elements and objects located on them to load-bearing frame building. It is advisable to apply a restriction on the number of storeys aerated concrete houses– up to 3 floors. Therefore, the choice is made taking into account the material of the walls, but the gas blocks themselves must correspond to the planned appearance of this architectural element.

Can be used in building construction the following types floors:

Monolithic;
Reinforced concrete slabs;
Structures with the installation of aerated concrete slabs;
Wooden or metal beams.

Choosing a monolithic or prefabricated option, using a beam scheme, hollow core slabs made of concrete, ordering a prefabricated metal structure or manufacturing a monolithic slab on site - these are the options on the choice of which the characteristics of the future building will largely depend. Four main factors are important:

availability of special equipment;
cost of materials and construction work;
material resistance to external influences;
construction time.

Application hollow slabs made of heavy concrete is also acceptable. They have similar characteristics to the analogues discussed above, but the mass of such overlaps will be higher. Therefore, you must first carefully calculate the load, and before installation you should equip a durable monolithic belt from reinforcement. This option is applicable for spans up to 6 m.

When settling in reinforced concrete structures the possibility of using special equipment and delivering slabs to the site should be assessed, taking into account their size and significant weight. Choosing a floor slab option, the price of which is quite reasonable and can withstand increased loads, is perfect for this type of building.

The advantages of tiled flooring also include:

possibility of quick installation;
high rates of sound insulation and thermal insulation.

When choosing this type of construction, a uniform level of thermal conductivity of the entire building is ensured. In addition, the mass of such a slab is less than its reinforced concrete counterpart. The convenience of the prefabricated structure itself is also created - the presence of a tongue-and-groove system for connecting the slabs into a single surface. If you use slabs without such a system, then the connection is made using reinforcement with pouring sand-cement mortar.

Aerated concrete products can be manufactured according to individual order autoclave method with an average length of 6 m. Therefore, the customer can choose the size ordered, but it should be remembered that such an overlap must be 20 cm longer than the span. It is also necessary to take into account the production time in order to adhere to the construction and installation work schedule.

The main advantage of this design is the ability to obtain any desired shape. The thickness of the overlap is up to 300 mm with a load-bearing capacity of up to 800 kg per 1 sq. m. For smooth structures, the maximum span is taken to be 6 m, and for slabs with a ribbed surface - up to 9 m.

Monolithic flooring provides additional support in the horizontal plane for walls during seismic vibrations. The thickness and characteristics of the reinforcement are determined by the planned load-bearing capacity.

The construction procedure is more labor-intensive and costly. First, the installation of formwork and reinforcement is required. Concrete is poured into the created frame. A limitation when arranging the floor is also the requirement to carry out work at above-zero air temperatures. Concreting in cold weather, even with the use of antifreeze additives, increases the time it takes for concrete to acquire formwork strength.

For arranging attic or attic floors, you can use installation wooden beams. It is recommended to use them if the distance between spans does not exceed 6 m in order to eliminate the possibility of deflections.

The beams rest on reinforced belt from monolithic reinforced concrete. The width of the support is at least 12-15 cm. The beams are secured with anchor plates. They should also be pre-treated with fireproof and antimicrobial protective compounds. Special attention It is necessary to pay attention to vapor barrier and thermal insulation of the ceiling.

Plywood or board flooring is placed on the beams. The space between the beams is filled with insulation - expanded clay, mineral wool or expanded polystyrene.

Higher load-bearing capacity is ensured by the installation metal structures using I-beams, channels and square-section pipes. Additionally, it is necessary to carry out anti-corrosion treatment.

Advantages this option in the construction of houses are associated with relatively low costs, the possibility of quick installation by a team of 2-3 people.

When arranging between floors in houses made of aerated concrete, one should not only take into account the factor of cost and speed of construction and installation work, but also calculate the load on the walls from the selected material, taking into account its own weight. It is quite acceptable to use several types of floors, for example aerated concrete slabs or a monolith for the entire house, and for attic floor– wooden beams.

Aerated concrete is artificial stone, which has recently been used in the construction world. It has great thermal conductivity and strength, is lightweight and easy to install, and has found its application in the construction of partition and wall blocks. Due to the precise parameters of aerated concrete floors, an even and smooth coating is ensured, which does not require subsequent finishing. Aerated concrete walls are prefabricated prefabricated slabs. Great demand for such products has arisen due to their environmentally friendly components that do not affect human health.

Where are they used?

Aerated concrete slabs are used in the installation of floors between floors of buildings, and are also used for the construction of walls. Aerated concrete structures are used in the construction of houses whose height does not exceed three floors. For floors, aerated concrete blocks with technical characteristics, suitable for the weight of the vaults.

Advantages

Aerated concrete blocks have no errors in size. Thanks to this, the surface is smooth, which significantly reduces the cost of finishing buildings. But there is one condition - the walls must also be free of reliefs, cracks and potholes. To get rid of defects, putty and sanding are used.
When installing an aerated concrete slab, you do not have to spend a lot of time or make a lot of effort.
On to the pros of this material include the lightness of the blocks, which during operation do not exert a load on load-bearing walls buildings.
When installing aerated concrete elements, a small amount of auxiliary equipment is used.
When using aerated concrete in the construction of houses with a small number of floors, they take into account the following characteristics materials: strength, fire resistance, noise insulation, thermal insulation and moisture resistance. The material is odorless, with environmentally friendly components.
The advantage when working with aerated concrete floors is their convenience when installing balcony bases.

Flaws

Main types

Building blocks made of foam concrete are autoclaved and non-autoclaved. The second type is the best in price and quality characteristics. When using autoclave plates, you need to be prepared that after installation, during operation, they “grow old.” In the production of autoclaved cellular aerated concrete slabs, lime is used, which causes the materials to harden as a result of pressure and temperature. In the preparation, cement is used as a binding element, as a result of which the particles harden naturally.

Floor slabs for aerated concrete come in the following types:

monolithic;
aerated concrete;
wooden beams;
reinforced concrete slabs;
metal beams.

When using aerated concrete slabs, it is necessary to install a reinforced ring belt.

A reinforced or aerated concrete floor is monolithic structure, consisting of grooves into which the plates are inserted. When working with aerated concrete slabs, they are laid on a reinforcing layer. In this case, the reinforcing structure is treated with anti-corrosion coatings.

The sizes of the slabs are different, but the main condition is that they must protrude 20 cm beyond the span. Prefabricated ones are also used, the production of which takes place in factories; They are more economical than monolithic ones. Aerated concrete differs lightweight design weight, which cannot be said about reinforced concrete.

Monolithic floors about 3 centimeters thick include reinforcing mesh, filled with concrete. Such designs aerated concrete house have different shape, which is different from slab ones. Single floors can withstand heavy loads, which is a plus; disadvantages include their high cost and labor intensity.

There are also prefabricated monolithic structures, including prefabricated aerated concrete floors, the top of which is strengthened.

Install a couple of centimeters below the ceilings to avoid pressure and cracks. Aerated concrete floor slabs can act as door and window lintels. When the wall thickness is more than 5 cm, prefabricated lintels are used, the length of which should be 1 centimeter greater than the opening.

Based on the material used, the slabs are divided into:

reinforced concrete;
aerated concrete.

Reinforced concrete hollow slabs

This is the most popular and affordable type of slab.

Previously, the use of massive reinforced concrete floors was unavailable in the construction of a private house due to their high cost and heavy weight, requiring the use of special equipment for delivery and lifting. Now such problems do not arise, but crane or manipulator have become commonplace in low-rise construction.

Hollow core slabs made of reinforced concrete have additional relief in the form of through chamber openings, and they themselves are made from heavy grades of concrete using reinforcement, which provides the necessary rigidity and strength. Such an overlap has a number of undeniable advantages:

Lightweight construction compared to a monolithic slab; voids significantly reduce the weight of the product, which means they can be safely used in buildings made of aerated concrete up to 3 floors inclusive.
High strength, which is ensured by internal cavities, reinforcement and high-quality concrete. The load-bearing capacity of slabs of this type is from 800 kg/m2.
Simplified installation and the ability to mount on bases of any shape. The size of the slab can be 6 or 9 meters, which significantly expands the possibilities for planning.
Internal cavities can be used to accommodate communications and wiring.
Good sound insulation.

The installation of reinforced concrete floors will be required along the entire perimeter. It can be made monolithic using formwork and reinforcement with a thickness of 10 mm. The width of the belt is at least 150 mm - the distance over which the slab will rest. Thanks to this, the load on the walls is reduced, local stresses caused by the pressure of the upper floor and the slab itself are eliminated.

Marking

According to the configuration of the cavities, the slabs are divided into:

PC – with round voids, rests on 2 sides;
PKT – with round cavities, rests on 3 sides;
PKK - with round voids, laid on 4 walls;
PKT – with round cavities, installation on 2 end and 1 long side;
PG – with pear-shaped voids; thickness – 260 mm; support on 2 ends;
PB – made without formwork, using continuous molding; its thickness is 260 mm, hole diameter is 159 mm; The product is placed on 2 end sides.

Based on the size of the cavities and thickness, the slabs are divided into the following types:

solid single-layer:

1P - slabs 120 mm thick.
2P - slabs 160 mm thick;

multi-hollow:

1pc - slabs 220 mm thick with round voids with a diameter of 159 mm.
2PK - slabs 220 mm thick with round voids with a diameter of 140 mm.
PB - slabs 220 mm thick without formwork.

Slabs of types 2P and 2PK are made only from heavy concrete.

Dimensions

The size of the hollow core slab is indicated in its marking.

For example, PC 90.15-8. This is a round-hollow slab 90 decimeters long and 15 inches wide. Permissible load for flooring is 8 MPa (800 kgf/m2).

Below the spoiler are given standard sizes slabs To view, click on the “Table” heading.

Slab type	Coordination dimensions of the slab, mm
Slab type
1pc	From 2400 to 6600 inclusive. at intervals of 300, 7200, 7500	1000, 1200, 1500, 1800, 2400, 3000, 3600
1pc		1000, 1200, 1500
1PKT	From 3600 to 6600 inclusive. at intervals of 300, 7200, 7500
1PKK	From 2400 to 3600 inclusive. at intervals of 300	From 4800 to 6600 inclusive. at intervals of 300, 7200
4pcs	From 2400 to 6600 inclusive. at intervals of 300, 7200, 9000	1000, 1200, 1500
5pcs	6000, 9000, 12000	1000, 1200, 1500
6pcs	12000	1000, 1200, 1500
7pcs	From 3600 to 6300 inclusive. at intervals of 3000	1000, 1200, 1500, 1800
PG	6000, 9000, 12000	1000, 1200, 1500

You will find more information in the article about.

Support depth

It is important not to exceed the maximum support depth. Otherwise, the slab will act as a lever and, under heavy loads, the wall may rise slightly above the slab. It is not noticeable to the eye, but is critical for the structure. Under loads from installed furniture, equipment and constructed internal interior partitions Cracks may appear in the walls due to stresses.

The length of support (the depth of insertion of slabs into the walls) should not exceed:

For brick walls— 160 mm;
when supporting floor slabs on aerated concrete blocks of class B3.5-B7.5 - 200 mm;
when resting on a concrete reinforced belt - 120 mm.

The minimum support length is also standardized. It should not be less than:

80 mm - for brick walls;
100 mm - for walls made of cellular concrete blocks;
65 mm - when resting on dense concrete class B10 and higher.

Installation of a floor made of reinforced concrete structures will necessarily require the use of a crane or manipulator with high lifting capacity. The weight of a standard 6-meter slab reaches 2 tons. In addition, installation will require certain skills. So the alignment is carried out at the seams on smooth side ceiling, after which the slabs are fastened with anchors, and the joints are poured cement mortar. Can be used as insulation mineral wool, Styrofoam.

Aerated concrete slab floors

Not only are partitions made from foamed concrete, but also interfloor partitions. This material has good strength, low thermal conductivity, it is easy to process and easy to use. An aerated concrete slab can withstand loads from 300 to 600 kg/m2, and the maximum weight does not exceed 750 kg. The precision with which such an overlap is made allows for installation in a short time and does not require additional training for subsequent finishing. These are the lightest floor slabs for aerated concrete walls.

Now on the market you can find two types of such structures:

They are made of concrete using autoclave injection molding and are equipped with special “groove-tooth” type elements, which simplifies installation. With this method, the density can correspond to the concrete grade D500. This option is most in demand in low-rise construction.
Standard panels, reinforced with reinforcing elements, can be used in any monolithic construction. They are easy to process, inexpensive, and well suited for non-standard solutions.

The maximum size of aerated concrete slabs does not exceed 5980 by 625 mm, and the thickness can range from 150 to 300 mm. Minimum length 2980 mm, pitch 300 mm. Such a variety of sizes and low weight makes it easy and with minimal losses to close the space between floors or any complex shape.

The edges of the slab must rest at least 10 cm on the wall of the house, so the layout must be done taking into account this size.

The disadvantages of such an overlap arise from the features of the cellular concrete , so the choice must be approached carefully and after careful calculations load bearing and operating conditions.

Aerated concrete is a very fragile material that is practically devoid of elasticity. To avoid cracks in walls and ceilings, it is necessary to take care of a high-quality monolithic or well-buried foundation that excludes any movement of the soil.
This material perfectly absorbs moisture, and this will require additional waterproofing with a special primer in rooms such as the bathroom and toilet. The reinforcement in aerated concrete must be processed in accordance with the requirements of SN 277-80, which guarantees a service life of the floors of at least 25 years.
A load-bearing capacity of less than 600 kg/m2 is insufficient to accommodate heavy furniture and equipment and large quantity of people. Screed, flooring, heated floor systems reduce the already low load capacity.
Additional reinforced concrete beams, laid across a distance across the width of the slab.

Comparative Cost

When constructing interfloor structures, the issue of price plays an important role. If we compare all the varieties with each other, we get the following sequence. The cheapest will be a reinforced concrete hollow slab with cost per square meter at 1200 rubles. In second place will be a monolithic product - 2000 - 2500 rubles per square meter. The cost can vary greatly depending on the thickness and manufacturing technology.

The most expensive flooring is a slab of foamed concrete - from 3,000 rubles per square. The high cost is explained by the complex manufacturing technology and the small width of the slab.

Also, the cost of slab floors must include the costs of transportation and lifting, which in some cases may be equal to their cost.

Ergonomic, lightweight and durable material is occupying an increasingly large share in private and industrial construction. Niche structures made of environmentally friendly breathable material for a long time The bala is occupied exclusively by wood. Despite all the advantages, raw materials natural origin exposed to environment, which requires a whole set of additional measures to maintain durability and functionality. Modern foam concrete has become the best alternative, which has all the main advantages and does not have the disadvantages of wood. Floors in a house made of foam blocks have become a logical continuation of this progressive technology.

Buy aerated concrete floors from professionals who personal experience know what quality and reliability are building materials!

Reinforced slabs presented on the site can be found in various sizes, which will help you quickly decide on a purchase!

Cost of foam block floor slabs

Order our floors for your home

The new generation of materials for construction outperforms its closest predecessors and analogues in all respects. One of the main factors that determined the widest use of elements of this type, is affordability and ease of use. The use of foam block floors in a house guarantees high strength structures, while in comparison with similar metal beams or concrete slabs the weight of the structure is significantly less. This eliminates the need for substantial additional expenses for the work of specialized powerful construction equipment and a large team of workers.

Possessing sufficient strength to guarantee successful operation under load, reinforced floors in a house made of foam blocks are capable of performing all the functions of analogues. Moreover, their installation is not associated with high level dangers, and installation is quite simple. Conventionally, floors are divided into basement, interfloor, attic and attic floors. Each of them implements the function of dividing the internal space and creating a reliable base for individual rooms.

By design features Today, manufacturers present several types of floors in a house made of foam blocks. Integrated and fused-monolithic structures are characterized by fairly fast and simple construction. The technology brought to perfection ensures the installation of components similar to standard reinforced concrete ones, while working with foamed concrete is much simpler.

Significantly lighter than metal beams, the samples presented in our assortment are capable of ensuring extremely fast and high-quality construction of buildings. Fully satisfying the most stringent requirements for resistance to temperature factors, these samples are not afraid of fire and can significantly increase the safety class of the building. The structures are not capable of becoming damp, rotting or rusting. A special set of measures applied to the reinforcing components guarantees their extreme durability, which is not inferior to, but much superior to, this parameter of standard reinforced concrete.

Please contact the contacts indicated on the website, and qualified specialist will always answer all questions and also give useful advice, which will help you make the right decision when purchasing the necessary products!

Photos of using floor slabs

Advantages of using foam blocks

Floors in a house made of foam blocks guarantee the entire project the unity and solidity of the material, providing each part of the structure with equally high stability and demanded performance characteristics. The work of engineers ensures the emergence of more and more new elements that are designed to most effectively solve assembly problems and provide additional stability.

Our specialized company is ready to provide customers with a large range of materials for laying modern floors in a house made of foam blocks. The cost always remains extremely attractive and allows you to implement even the most daring projects with a limited budget. We always meet our clients halfway, offering high-quality service and profitable cooperation.

We offer you reliable building materials that differ high quality and increased strength. We offer products according to affordable price. You can quickly purchase aerated concrete floors from us.

Proposed building blocks are reinforced products that have grooves made of cellular concrete. These slabs are used during the construction of a building, namely, for floors, as a load-bearing element.

When choosing an aerated concrete floor, it is necessary to take into account the future load that the block will encounter. Strong pressure requires a greater density and thickness of the product from the slab. If necessary, consult with a specialist from our company. A qualified employee will always be happy to help with product selection.

Floors in a house made of foam blocks from a leading company

Aerated concrete floors have good performance characteristics In addition, these products have high fire safety and fire resistance, unlike their reinforced concrete counterparts. The slabs have good thermal insulation and sound insulation, and create less load on the load-bearing elements.

Thanks to our products, you can reduce the cost of installing floors, because you only need a crane, without jacks and formwork.

Our company’s pricing policy allows us to set affordable prices for building blocks, which can be purchased from us in any volume. We guarantee prompt delivery of orders, because we have a large fleet of our own vehicles.

While studying wholesale, our company can supply at any time necessary materials to the object, which will allow you not to interrupt construction works, and finish what you started as quickly as possible. Order floors in a house made of foam blocks by telephone, and also check out the prices of goods using the price list posted on the website.

Buying an aerated concrete floor slab from a trusted manufacturer is a reliable investment! We guarantee good quality aerated concrete floors!

What types of flooring are used in the house nowadays:

For structures made of lightweight building materials, it is important to carefully maintain a balance between the strength and weight of each segment. The load on the walls is strictly limited and the use of solid metal structures or standard elements of heavy concrete can be fatal for the stability of the entire structure. Currently, the following types of flooring are used in a foam block house:

reinforced concrete prefabricated structures;
monolithic reinforced concrete elements made of porous material;
frame-hemmed models;
complex prefabricated monolithic from gas silicate blocks.

It is worth noting that the use of a number of solutions requires additional strengthening of the structure, which often leads to an increase in the cost of the project. Having solid experience in the manufacturing of lightweight and ergonomic segments, the Zabudova company has developed a universal solution that completely eliminates the use of materials with high thermal conductivity or overly massive structures. Thanks to the presented segments, floors in a house made of foam blocks will become an organic component of the structure, ensuring high reliability with low weight and other advantages of traditional porous materials.

Constantly reflected current discounts for blocks and active shares

WE make low-rise buildings from Itong foam blocks with foundation calculations based on IGI. Prices are reasonable.

You can order a landscape design project for your site from us.

Hollow core slabs and aerated concrete walls

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Considering the construction of a cottage using Ytong aerated concrete blocks or regardless of the manufacturer. Aerated concrete blocks Grasse, Ytong, bonolit- the customer asks the question, is it possible to cover the floor with hollow-core floor slabs when constructing aerated concrete walls from ytong aerated concrete blocks, Gras aerated concrete blocks, and foam blocks? The answer is clear - if you are constructing aerated concrete walls of a cottage in accordance with the standards for the design and construction of buildings and structures set out in STO-501-52-01-2007 and use them accordingly aerated concrete block Ytong or aerated concrete block Gras, foam block with physical and technical characteristics corresponding to this standard, then the use is moreover advisable.

Let's consider the feasibility of using hollow core floor slabs:

1-reinforced concrete hollow core slabs have a service life that does not require overhaul or replacing a similar operational period of the entire house for 100 years. The same cannot be said about wooden floors.

2-hollow slabs are fireproof and have good fire resistance, which also cannot be said about wooden floors

3- Having a lower weight of 1 m2 of about 300 kg/m2 in comparison with a monolithic reinforced concrete floor of at least 450 kg/m2. They are equal to him bearing capacity, which reduces supporting part foundation and, accordingly, the consumption of materials for the construction of the foundation and the cost of the entire foundation of the cottage are reduced.

4- Taking into account the construction costs of 1 m2 monolithic ceiling and the cost of building 1 m2 of flooring from hollow core slabs - it becomes clear that the cost of 1 m2 monolithic slab floors are 45-60% more expensive, depending on the thickness of the monolithic reinforced concrete floor and its reinforcement.

5-The use of hollow-core floor slabs, in comparison with a monolithic reinforced concrete floor, does not require highly qualified workers, which is important today.

6- Application of prestressed hollow core slabs type P.B. reinforced according to the principle of tension "STRINGS" make it possible to cover a span of up to 9.0 meters with hollow core slabs, which is very, very difficult to achieve using simple wooden beam beams, and monolithic reinforced concrete floor 9.0 meters long is practically impossible to use on a cottage with aerated concrete walls.

However, it must be understood that the use of hollow core floor slabs requires, in turn, compliance with certain requirements, which are set out in design standards and construction standards. In particular, the supporting part in the hollow slab in the support unit and the design of the support unit itself are strictly regulated. On an aerated concrete wall built from aerated concrete blocks Ytong or aerated concrete blocks Grasse, a hollow-core floor slab can only be supported under certain conditions, and these conditions are calculated; of course, such a calculation is hardly available to an ordinary developer, and therefore I do not recommend using it in the absence of a project. The “neighbor” principle often fails and is not permissible when installing hollow-core floor slabs. Still, it hangs over your head...

A more accessible and understandable principle of supporting a hollow-core floor slab is on a monolithic reinforced concrete belt, and the area of support on the concrete part of the monolithic reinforced concrete belt should not be less than 80mm. And the end of the slab must have thermal insulation in the aerated concrete wall to prevent freezing of this zone aerated concrete wall cottage built from Ytong aerated concrete blocks. When constructing walls from aerated concrete blocks 375 mm thick from other manufacturers without additional insulation V climatic zone central region not enough. With a greater thickness of the aerated concrete wall at certain constructive solutions, additional thermal insulation of the aerated concrete wall in the area of the ends of the mounted hollow-core slabs may not be required.

There is one more feature in the support units used, provided that the floor is covered with hollow-core floor slabs; the use of large support units for large spans, where deflections occur, increasing the support part beyond 150 mm is no longer safe for the wall. And in the absence of a project, we must not go beyond this figure.

Today, along with traditional PC-type hollow-core floor slabs, so-called hollow-core floor slabs are widely used. So, these reinforced concrete hollow-core floor slabs do not have transverse reinforcement and can only be supported on two sides. But these slabs have an advantage over reinforced concrete hollow PC slabs. Since they do not have transverse reinforcement, and these reinforced concrete hollow-core slabs have prestressed reinforcement, both in the lower flange of the hollow-core slab and in the upper flange of the hollow-core slab, then from these hollow-core slabs, sections can be cut along the hollow-core slab and used as slabs floors, lintels or beams with appropriate spans and under appropriate loads.

We are ready to answer all questions regarding the use of prefabricated reinforced concrete hollow-core floor slabs in cottage construction at our telephone numbers listed on the website.