Overlappings from autoclaved cellular concrete. What can be used to build ceilings in aerated concrete houses: main types and characteristics

Ergonomic lightweight and durable material occupies an increasing share in private and industrial construction. The niche of structures made of eco-friendly breathable material has been occupied exclusively by wood for a long time. Despite all the advantages, raw materials of natural origin are subject to environment, which requires a whole set additional measures for durability and functionality. Modern foamed concrete has become the best alternative, which has all the main advantages and does not have the disadvantages of wood. Ceilings in the house 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 mean building materials!

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

The cost of floor slabs from foam blocks

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The new generation of building materials outperforms its closest predecessors and analogues in terms of the entire set of indicators. One of the main factors that led to the widest use of elements of this type, is affordability and ease of use. The use of ceilings in a house made of foam blocks guarantees high structural strength, while in comparison with similar metal beams or concrete slabs the mass of the structure is much less. This eliminates the need for substantial additional expenses for the work of specialized powerful construction equipment and a large team of workers.

With sufficient strength to guarantee successful operation under load, reinforced floors in a house made of foam blocks they are able to perform all the functions of analogues. At the same time, their installation is not associated with high level danger, and installation is quite simple. Conventionally, the floors are divided into basement, interfloor, attic and attic. Each of them implements the separation function inner space and creating a reliable base for individual premises.

By structural features today, manufacturers present several types of floors in a foam block house. One-piece and one-piece-monolithic structures are characterized by fairly fast and simple erection. The advanced technology ensures that the components are installed in the same way as standard reinforced concrete, while working with foamed concrete is much easier.

Significantly lighter than metal beams, the samples presented in our assortment are able to provide extremely efficient and high-quality construction of buildings. Fully meeting 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. Structures are not able to dampen, rot and rust. A special set of measures applied to the reinforcing components guarantees their ultimate durability, which is not inferior, but much exceeds this parameter for standard reinforced concrete.

Contact the contacts indicated on the site, and a qualified specialist will always answer all questions, as well as give useful advice which will help you to accept the right decision when purchasing the necessary products!

Photo of the application of floor slabs

Benefits of using foam blocks

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

Our specialized company is ready to provide customers with a wide range of materials for laying modern ceilings in a foam block house. The cost always remains extremely attractive and allows you to implement even the most daring projects, having limited budget. We always meet the needs of our clients by offering quality service and profitable cooperation.

Your attention is offered reliable building materials that differ high quality and increased strength. We offer products at an affordable price. You can quickly purchase aerated concrete floors from us.

Suggested building blocks are reinforced products that have grooves made of cellular concrete. These slabs are used during the construction of the 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 face. Strong pressure demands from the plate greater density and product thickness. If necessary, consult with a specialist of our company. A qualified employee will always be happy to help with the choice of goods.

Ceilings in the house from foam blocks from a leading company

Aerated concrete floors are good operational characteristics, Besides, this product has high fire safety and fire resistance, unlike its reinforced concrete counterparts. The slabs have good thermal and sound insulation, and create less load on the load-bearing elements.

Thanks to our products, you will be able to reduce the cost of installing ceilings, because you only need a crane, without jacks and formwork.

The pricing policy of our company allows you to set an affordable price for building blocks that can be purchased from us in any volume. We guarantee prompt delivery of the order, because we have a large fleet of our own transport.

Engaged in wholesale, our company at any time can supply the right materials on the object, which will allow not to interrupt construction works and finish what you started as soon as possible. Order ceilings in the house from foam blocks over the phone, and also check the prices for goods using the price list posted on the website.

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

What types of flooring in the house are used in our time:

For structures made of lightweight building materials, it is important to carefully balance 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 their heavy concrete can be fatal to the stability of the entire structure. Currently, the following types of floors are used in the house of foam blocks:

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

It should be noted that the application 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 segment of manufacturing light and ergonomic segments, the Zabudova company has developed a universal solution that allows you to completely eliminate the use of materials with high thermal conductivity or too massive structures. Thanks to the presented segments, the floors in the foam block house will become an organic component of the structure, provide high reliability with low weight and other advantages of traditional porous materials.

Overlap - horizontal design, which is not only a separating barrier between floors, a residential level and a basement or roof, but also performs transfer and distribution function the load taken on by the load-bearing walls and other elements also ensures the rigidity of the house.

And if it's about roofing, basement or basement ceilings, then they must be arranged in such a way as to guarantee the preservation of heat.

The device of a monolithic reinforcing belt

For aerated concrete buildings reinforcing belt device is mandatory. Besides what it does load distribution function from the floors themselves, walls top floor, and the so-called payload: people, interior items, equipment, etc., armored belt compensates for the main disadvantage of aerated concrete associated with its inability to bend.
And despite the fact that aerated concrete withstands compression well, the absence of a reinforcing belt will lead to an uneven load on the load-bearing walls. As a result, cracks appear on the walls, and some blocks may even burst. For the device of a reinforcing or strapping circuit are used heavy types concrete and fittings corresponding class A III.

One of the ways to construct a reinforcing belt can be as follows:

• first, concrete blocks are installed along the outer edge or you can use silicate brick for this;
• reinforcement is laid between them and the edge of the ceiling, which is necessarily tied up (cell size, on average, 10 × 10 cm);
• corners, external and internal, are reinforced with steel brackets;
• after that - reinforcing belt poured with concrete

The main types of floors for houses made of aerated concrete

When building houses from aerated concrete, you can use both monolithic and prefabricated floors. Overlappings can be arranged on wooden and metal beams, using hollow core slabs from heavy concrete or cellular, prefabricated monolithic structures or produced directly on site in the form of a monolithic slab.
Each type of cover has their undeniable advantages and, accordingly, the disadvantages, but given the popularity of the use of aerated concrete in private housing construction, the following three selection criteria come to the fore:

1. The need to use special equipment;
2. The cost of materials and installation;
3. Construction speed.

Selection of floors by strength properties and maximum loads , in most cases is not relevant, since all these types provide it at a level sufficient for this category of construction objects, on average, the calculated data are within from 500 to 800 kg load per 1 m² area.

But when choosing, materials are preferred having less weight, while maintaining the strength characteristics, and a sufficient service life, commensurate with aerated concrete, and resistance to various external influences: natural or chemical character.

Ceilings from aerated concrete slabs

The use of material similar in properties and characteristics for floors for houses made of aerated concrete is justified, especially considering that the thermal conductivity of the material is the same. Moreover, having settled on this material, you can choose for a house floor device:

• prefabricated monolithic structures, which, during the installation process, are reinforced by the device of concrete reinforced joints;
• monolithic slabs;
• reinforced concrete slabs for coverings.

Many manufacturers of aerated concrete blocks offer the production of floor slabs on individual sizes , but on average length is up to 6 m, width- up to 1.5 -1.8 m, and thickness- only 30 cm, and the calculated load per 1 m² is about 600 kg. Aerated concrete floor slabs are manufactured only by autoclave, and their density corresponds to D500.

Often monolithic slabs supplied with tongue and groove joints, which ensures the tightness of their fit to each other, and the installation is carried out in the shortest possible time- in one work shift, a team of 2-4 people can cover an area from 50 to 120 m². The most crucial moment when installing floors in this way is timing plate manufacturing, their transportation to the site and the crane rental time required for this.

For floors using prefabricated monolithic T-shaped blocks special lightweight reinforced concrete beams are used, the length of which is about 7 m, and the height is only 20 cm. The weight of this design is approximately 120 kg, which allows it to be installed manually.

Beam installation step is 68 cm, which, with a block length of 60 cm, provides it with support on a beam equal to 2 cm on each side. When installing the first row, one side of the floor block is also must be at least 2 cm lean on the load-bearing wall of the building.

Formed connections between blocks, in the form of grooves must be filled with concrete., its class must correspond to B20, and after all the floor blocks are laid, fits in reinforcing mesh and a layer of concrete of 5 cm is laid. Complete setting of concrete occurs after 4 weeks, but it is allowed to partially load the structure after 6-7 days.

Ceilings from reinforced concrete slabs

Traditional hollow core heavy concrete floor slabs are quite can be used for houses constructed from aerated concrete. Their use is most justified if the formed spans are 4.5-6 meters. But before proceeding with the installation, also need a durable device monolithic armored belt , which will distribute its rather large weight to the load-bearing walls.

In terms of cost, this one of the most economical options devices overlapping of the building, even taking into account the fact that it is necessary to involve special equipment for their installation, namely a crane. In addition, the delivery of slabs to the construction site is often accompanied by certain difficulties., considering the weight and especially the length of the products. The overlap of this type of slab allows loads of 800 and even a little more per 1 m².

Wooden and metal beams

On wooden beams in aerated concrete houses can arrange not only interfloor ceilings , but also basement, attic or attic. But it is not recommended to use this species when, if the distance between bearing walls exceeds 6 m, in this case, a deflection occurs that exceeds 1/300 of the length of the log or beam used as beams. The size of the beam section is determined primarily by its type, the planned loads and the span length.

But it's important to keep next rule: the distance between the axes of adjacent beams should be within the range of half a meter to a meter.

Supporting a beam on a pre-prepared reinforced belt from monolithic reinforced concrete should be 12-15 cm. To fix them, special anchor plates with an anti-corrosion coating are used.

But, giving preference to wooden beams, it should be remembered that they must be treated with antipyretic compounds, as well as means directed against the reproduction of insects and various microorganisms. The only thing you should exclude are products made on an oily basis, since they prevent moisture from evaporating and given the moisture absorption of the main building material of the building, it will worsen its strength and performance characteristics.

It is also important to take care of sufficient thermal insulation of such a floor- this will protect against the formation of a dew point right in the beam itself. It is necessary to pay attention to the connection of the wall and the beam, the so-called interface node.

To prevent moisture condensation in this area, all gaps must be sealed, for example, sealants or plaits from polyethylene foam. Full contact should not be allowed along the entire length of the beam with the wall, in this place 5 cm clearance required, which is sealed with insulation, most often it is mineral wool.

Beams, the length of which exceeds 4-4.5 m, due to their deflection deform and break monolithic belt, therefore it is recommended before installing them, to perform a small chamfer on their ends to exclude the manifestation of data negative processes . After the beams are installed, you can proceed to the device of the subfloor and the laying of thermal insulation, and if the basement is being performed, you need to take care of effective vapor barrier.

Installing in the same way metal beams for which are used:

• I-beams;
• channel;
• pipes with a square section.

Their bearing capacity high enough, they provide permissible loads up to 500-600 kg per 1 m², but must have reliable anti-corrosion treatment. Their installation, as well as wooden beams, does not require the involvement of special equipment and can be performed by a team of 2-3 people.

Monolithic overlap

The device of this type of overlap is also is valid in houses made of aerated concrete and arranged using formwork. The thickness of the slab in this case can be 10-20 cm. Such an overlap has the highest load bearing capacity exceeding 800kg/1m². For such a cover span doesn't matter, as well as the configuration: it can be made both round and semicircular, as well as any other shape.

Concrete can be made directly on the site, but it is recommended to use the factory, with exact observance of all technology of its production. Also, most likely, the services of a concrete pump will be required, since the mixture must be supplied to a certain height.

Current discounts on blocks and current promotions are constantly reflected

Low-rise from foam blocks Itong with the calculation of foundations on the basis of IGI we do. The 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 Gras, Ytong, bonolit- the customer asks a question, is it possible to cover the floor with hollow-core floor slabs during the construction of aerated concrete walls from ytong aerated concrete blocks, aerated concrete Gras blocks, foam blocks? The answer is unequivocal - if you are building aerated concrete walls of the cottage in accordance with the standards for the design and construction of buildings and structures set forth in STO-501-52-01-2007 and, accordingly, use the Ytong aerated concrete block or the Gras aerated concrete block, foam block with physical and technical characteristics corresponding to this standard, then the application is even more expedient.

Consider the feasibility of using hollow core slabs:

1-reinforced concrete hollow core floor slabs have an operational period of durability that does not require overhaul or replacement of the same operational period of the whole house for 100 years. What can not be said about wooden floors.

2- hollow core floor slabs are fireproof and have good fire resistance, which cannot be said about wooden floors either.

3- Possessing less weight 1m2 is about 300 kg/m2 compared to a monolithic reinforced concrete floor of at least 450 kg/m2. They have an equal bearing capacity with it, which reduces the supporting part of the 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 floor and the cost of building 1 m2 of floor slabs from hollow core slabs - it becomes clear that the cost of 1 m2 of a monolithic floor slab is 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 skilled workers, which is important today.

6- Application of prestressed hollow core floor slabs type P.B. reinforced according to the principle of tension "STRINGS" make it possible to block a span of up to 9.0 meters with hollow core slabs, which is very, very difficult to achieve using simple wooden beams, and monolithic reinforced concrete floor 9.0 meters long, it is practically impossible to apply 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 core slab in the support node and the design of the support node itself are strictly regulated. On an aerated concrete wall built of aerated concrete blocks Ytong or aerated concrete blocks Grasse, a hollow-core slab can be supported only 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 principle like that of a “neighbor” often fails and is not permissible when installing hollow core slabs. It's still hanging over your head...

A more accessible and understandable principle of supporting a hollow core slab is on a monolithic reinforced concrete belt, and the zone of support on the concrete part of a monolithic reinforced concrete belt should not be less than 80 mm. And the end of the slab must have thermal insulation in the aerated concrete wall, excluding freezing of this zone aerated concrete wall cottage built from Ytong aerated concrete blocks. When building walls from aerated concrete blocks with a thickness of 375 mm from other manufacturers without additional insulation in climate 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 ​​\u200b\u200bthe ends of the mounted hollow-core slabs may not be required.

There is one more feature in the used support nodes, provided that the floor is covered with hollow-core floor slabs, the use of large support nodes for large spans, where deflections occur, it is not safe for the wall to increase the support by 150 mm. And in the absence of a project, it is necessary not to go beyond this figure.

Today, along with traditional hollow core floor slabs of the PC type, 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 PC hollow core slabs. Since they do not have transverse reinforcement, and these reinforced concrete hollow core slabs, the reinforcement is prestressed, both in the lower flange of the hollow core slab and in the upper flange of the hollow core slab, sections can be cut from these hollow core slabs along the hollow core slab and used as slabs ceilings, lintels or beams with appropriate spans and under appropriate loads.

We are ready to answer all your questions regarding the use of prefabricated reinforced concrete hollow core slabs in cottage construction on our phones listed on the site.

Today building technology used to build houses are constantly being improved. Manufacturers use innovative materials. AT recent times became the most popular aerated concrete blocks. In our company, you can buy gas blocks (which are often confused with foam blocks) from the manufacturer at affordable prices in Moscow and the Moscow region.

Aerated concrete wall blocks Bonolit with density D500, D600 are excellent for use as a material for partitions in low-rise and high-rise construction. Only with the use of aerated concrete is it possible to erect partition blocks with a thickness of 100 mm, which ensures a larger usable area of ​​​​the premises. For construction, you can also buy foam blocks inexpensively, but the manufacturing technology of foam blocks does not allow you to achieve similar parameters.

Operational properties of aerated concrete.

Low thermal conductivity. The thermal conductivity of aerated concrete does not exceed 0.14 W / m2, which ensures high thermal insulation of the building at any external temperatures. If you decide to buy foam blocks in Moscow, keep in mind that their thermal conductivity is noticeably higher than that of gas blocks. It is 0.38 W / m2.

The lightness of the material. The weight of Bonolit 40 wall blocks made of aerated concrete is 25 kg. Thanks to such a small mass, the use of additional lifting equipment is not required to work with gas blocks. For foam blocks, this indicator is quite difficult to maintain, since manufacturers cannot strictly follow the recipe during their manufacture, and the weight and density indicators fluctuate significantly.

High frost resistance. Due to the presence of many through pores that displace water and ice during freezing, aerated concrete is able to withstand up to 100 cycles of alternate freezing and thawing. The same indicator for foam blocks is only 35 cycles.

Simple processing. Aerated concrete can be easily sawn, drilled, milled, planed, using universal tools. Due to the difference in weight and the homogeneity of the structure of the materials, it will take much more time and effort to create a suitable form from the foam block.

Comparison of foam concrete and aerated concrete

December 22, 2014 No comments

Lightening building materials leads to savings in construction costs. The lower the load on the foundation, the more economical the estimate. Initially, the unloading of the building was carried out through the use of lightweight materials for the construction of walls.

Modern technologies do not stand still, and aerated concrete floor slabs allow you to create more lightweight construction from inexpensive materials. Slabs are close relatives of blocks. They were given the strength, ease and speed of installation of the known material.

Aerated concrete floor slabs - technical specifications

The weight of the product is approximately 120 kg. Of course, lifting it to a height manually is problematic. But a relatively small indicator makes it possible to use less load-bearing, and therefore expensive equipment. The light weight and integrity of the structure allow saving on the number of employees. It will take three people to install the plates.

The product is made of concrete grade D500, with autoclave exposure. This technology gives the material strength and durability of use. The concrete strength class in this case is B3.5. Plates withstand a load of 600 kg / m2.

For ease of connection individual elements a groove-ridge part is provided along the edges. The design fixes the position of the products and provides greater strength of the connection of the plates.

Types of aerated concrete slabs

According to the manufacturing technology of aerated concrete type slabs, there can be:

• autoclave;
• non-autoclave.

One of the significant differences for the consumer is the pricing policy. Non-autoclaved plates are cheaper. During their hardening, excessive energy consumption is not applied. Accordingly, the product gains the necessary strength on its own. The process takes longer, but the result, subject to all storage rules, is of high quality and Smooth surface. The disadvantage of such products is the concentration of gas bubbles closer to the surface. Also, the cells are arranged unevenly, which leads to uneven operation of the plate along the length of the surface.

Autoclave products are obtained by applying temperature and pressure. With this technology, not cement, but lime acts as a binder. The process can be compared to the formation yeast dough. In the mold, the mixture swells and, under the influence of temperature, seizes.

Foaming in the non-autoclave method occurs by introducing foam from chemical substances. It is she who creates the effect of aerated concrete.

Advantages and disadvantages of aerated concrete slabs

Everyone new material has both advantages of use and disadvantages of technology and installation. Let's start with the good. Aerated concrete slabs are light and practical. dimensions products contribute to both easy installation and transportation without special selection of the type of equipment.

The products are easy to mount due to the groove clearances. For the material, special adhesive compositions, high strength.

The material has low moisture absorption. This facilitates its use even in showers and baths. The use of this type of overlap without consequences is possible at a humidity of 60-75%.

Aerated concrete products are very geometric. Their size and shape almost always perfectly match the GOST parameters. For the evenness of the base, it is also necessary to ideally vertical installation walls. In case of distortions or defects, the plate can always be corrected with sandpaper.

Due to the pores, the material absorbs moisture in case of chips and surface defects. The base must be treated with moisture-proof solutions and plasters. The structure must be reinforced. Due to this, the rigidity of the building is achieved, and the bearing capacity of the floor is increased.