Ceilings in aerated concrete houses: slab, monolithic,

In this article we will talk about what are the floor for a house of aerated concrete and what are the main characteristics of these structural materials.

The theme of choosing the optimal type of floors for such buildings is not accidental, since cellular concrete and structural elements based on them are widely used for the construction of low-rise residential buildings.

Overlaps and their features

Ceilings are one of the most important structural elements in any modern home. Interfloor horizontal modifications of these structural elements assume horizontal and vertical loads, and redistribute the resulting forces on the load-bearing walls.

Thus, floors have to withstand the weight of their weight, as well as the weight of furniture, flooring and people living in the house. Another important function of these structural elements is to ensure the optimal parameters of the rigidity of the structure of the construction object.

Based on the above, the following conclusion can be made. The choice of interfloor overlap requires a competent and responsible approach, especially when it comes to houses built with the use of aerated concrete wall blocks.

The fact is that concretes with a cellular or porous structure have less compressive strength than ordinary dense concrete materials. This parameter should be taken into account when selecting structural elements for arranging objects built using light wall blocks.

Types of floors

On the building materials market, interfloor ceilings in a house of aerated concrete are represented by a wide range of different modifications.

In accordance with the method of execution and in accordance with the type of material used in the production, these structural elements are divided into the following modifications:

• slab;
• monolithic;
• made of metal and wooden beams.

We will tell about each of these modifications in more detail.

Slabs of overlap

This type of structural elements is assembled directly on the construction site using reinforced concrete slabs.

The number of plates is determined by their sizes and dimensions of the object. The dimensions of reinforced concrete slabs used in the construction of low-rise buildings are 1–1.5 meters wide and 1.3–7.2 meters long.

Reinforced concrete slabs used in the manufacture of ceiling structures are designated as “HB”, “NBC”, “PC” and “PNO”. These concrete goods are manufactured by large reinforced concrete plants and are already delivered to the final buyer.

The advantages of slabs should include the following qualities:

• short deadlines and ease of installation (if necessary, diamond drilling of holes in concrete can be used);
• bearing capacity not less than 800 kg / m?therefore, there is no threat of collapse, regardless of the parameters of the mechanical load;
• presence of special voids due to which a high degree of noise insulation and low thermal conductivity in comparison with full-bodied structures;
• affordable price in comparison with monolithic counterparts;
• less weight in comparison with monolithic concrete structures, which is important for construction projects built with the use of cellular and porous blocks.

However, the use of plates has a number of characteristic flaws, including:

• The need to use lifting machinery, which leads to additional financial costs and inconvenience, if access to the overall vehicles is difficult for the construction site.
• Limited selection of sizes.
• The need for professionalism and sufficient installation experience.

Monolithic floors

Such modifications of the floors are made directly on the construction site. To this end, a formwork is installed at the construction site, in which the reinforcement cage is installed and a further cement solution is cast, selected in accordance with the technological requirements.

As a rule, the thickness of the monolithic floors used in buildings made of lightweight concrete is 150-300 mm.

The advantages of these construction materials include:

• high carrying capacity;
• wide range of configurations due to the independent arrangement of forms for pouring concrete (for finishing the configuration, cutting of reinforced concrete with diamond circles can be used);
• wide range of sizes;
• the possibility of using this technology where the use of plate analogues is difficult or broken.

Along with the advantages, there are a number of disadvantages, among which are:

• the duration of the installation work and the long time required for a set of overlapping of the optimum strength parameters of concrete;
• the need to develop a project, taking into account the mechanical loads exerted on the structure, and other operational features;
• the need to use dimensional special equipment, including mobile mixers and concrete pumps.
• the high cost of manufacturing the floor, which adversely affects the cost of the entire construction.

Important: In the manufacture of monolithic ceilings is not allowed the preparation of concrete with their own hands using small-sized agitators. A solution of the required grade must be supplied in the volumes necessary for a one-time pouring of the whole structure. Therefore, it is advisable to order ready-made concrete in specialized organizations that guarantee the conformity of products to the specified brand.

Overlaps on metal and wooden beams

Wooden floors in the house of aerated concrete are popular for a number of reasons. They are easy to make and really weigh little. Moreover, hardwood floors can be assembled and used for their intended purpose without the need for long-term strength building, which is typical of concrete products.

For the manufacture of such structures is used solid wood or laminated timber. The gaps between the bars are filled with insulating materials. Complementing the construction of the crate, which is packed on the bars, both from the top and from the bottom side. Above the battens are installed rough and clean floors, and on the other hand equipped with a ceiling surface.

Similar construction is the overlap, in which instead of sawn timber, metal beams are used. Such designs are characterized by high weight compared to fully wooden counterparts. But in this case, the overlap is more resistant to mechanical stress.

Among the shortcomings of the first and second solutions should be noted the possibility of manufacturing structures with only a small area.

Important: With an increase in the area of ​​overlap decreases its resistance to mechanical loads, which is most noticeable if the house is used prefabricated building of wood.

Conclusion

So, now we know what the instructions for arranging various floors, it remains to determine the system, which is the best solution for a house built with aerated concrete.

Finished slabs and monolithic concrete structures are a good solution, but their weight and complexity of installation negate all the advantages. Ceilings based on metal or wooden beams, light and easy to install. It seems that prefabricated ceiling on the basis of beams is the best option for a house built of lightweight concrete.

If you have any questions, more useful information can be found by watching the video in this article.