Aerated concrete overlap - features of prefabricated

In modern construction, various types of floors are used, which differ not only in laying technology, but also in material. Today, such material as aerated concrete, which is used both for masonry walls and for arranging interfloor structures, is becoming increasingly popular.

The advantages of using aerated concrete

Aerated concrete floors, created by yourself, from similar structures made of other materials are distinguished by the following characteristics:

• High strength. They withstand a load of 300-600 kg / m2;
• Low weight up to 750 kg;
• Exact geometric parameters;
• Fastening system for maximum fit;
• Ease and simplicity of installation;
• Ease of transportation;
• Big operational period;
• Environmental Safety. The composition of such blocks include cement, lime, silicon, aluminum - materials are absolutely not dangerous for humans;
• Resistance to environmental influences.

Types of aerated concrete floors

There are the following types of similar structures made of lightweight cellular material:

• Reinforced;
• Monolithic overlap on aerated concrete with strained or non-stressed reinforcement;
• Precast monolithic structures consisting of such parts as prefabricated floors of aerated concrete, which is reinforced from above with reinforced concrete.

Precast monolithic slab

Standard products for the construction of floors of this type are made on the factories of concrete goods, giving them the following dimensions:

1. Length - no more than 6 m;
2. Width - no more than 1.8 m;
3. Thickness - 30 cm.

The design load on such surfaces is about 600 kg / m2 and higher. For the installation of this type of product requires a force of 2-3 builders and the help of a crane.

Note! For the convenience of lifting the plates with the help of lifting equipment, steel hinges are provided on their surface.

To ensure the joining of adjacent plates with a high level of strength, the seams in the side faces of each product use a groove-ridge system. Used when installing a tightening clamp will help seal the connection as much as possible.

Note! In order not to damage the corners or side faces of the slabs during transport, it is advisable to use soft loading belts.

A distinctive feature of precast-monolithic floors is their design, consisting of standard T-shaped blocks of aerated concrete, which are installed on reinforced concrete reinforced beams.

Reinforced frame to create a similar design is called "Trigon" and consists of the following elements:

1. Two steel reinforcing bars located along the flat concrete part with deepening in its surface;
2. The third reinforcing longitudinal rod is installed at a height of 20 cm from the lower plane of the concrete base;
3. The two lower reinforcing rods and the upper one are connected by means of transverse joints forming triangles.

Bottom of the reinforcement of this design is covered with a layer of concrete at least 3.5-5 cm thick. This thickness is sufficient to provide the required level of thermal stability for the time specified by the regulatory documentation.

Such a frame design prevents the possibility of the structure bending even under the conditions of exceeding the nominal load by 1.5 times.

Instructions for the manufacture of trigon stipulates the use of rods of the following diameters:

• Lower 2 rods with a diameter of 12 mm;
• The upper rod with a diameter of 8 mm;
• Longitudinal rods with a diameter of 16 mm;

The main characteristics of this beam include:

• Length - 7 m;
• Width and height - 20 cm;
• Weight - 17 kg 1 linear meter of the structure;
• Maximum weight 12 kg;

Council If in the process of creating a slab like product it will be necessary to shorten or drill a hole in it, you should use such methods as cutting reinforced concrete with diamond circles and diamond drilling holes in concrete.

Features of the mounting structure

In order to make laying aerated concrete slab will need to use lifting equipment and the help of two installers and a crane operator.

Council In order for the surface to turn out to be of the highest quality, it is necessary to level the pre-supporting walls.

The process of laying products such as aerated concrete floor slab contains the following features and nuances:

1. Constructing interior partitions, they should be made 10 mm below the level of the floor;

Council This requirement must be fulfilled without fail. Otherwise, aerated concrete floor slabs will be subject to additional loads, which will entail the occurrence of cracks on the surface. Some practitioners suggest the possibility of sawing the partition in place, but this process will at times complicate the installation process.

1. The depth of the support plates on the supporting elements of the structure should be 1.25 mm or more;
2. Laying products carried soft slings;
3. If plates with a tongue-and-groove fastening system are used, then upon completion of the installation work, the overlap should be strengthened with a clamp, which will ensure the quality of the fit;
4. Before laying the panels, the walls are pre-treated with mortar;
5. In those areas of the structure where overlapping is not planned (ladders, lifting of communications, etc.) metal structures are installed;
6. The seams formed between units of material are treated with concrete mortar;

1. Along the perimeter of the structure, the reinforcement cage is made of a steel bar in two levels;
2. Formwork blocks are installed on the concrete solution;
3. The resulting annular anchor is concreted.

The result of the production of such construction work will be the overlap, assembled from plates, forming a monolith with a uniform distribution of the load over the entire surface.

The price of the ceiling for a building created from aerated concrete slabs directly depends not only on the quality of the chosen building material, but also on the area of ​​the interfloor space and, of course, on the number of floors.

Ceilings for walls of aerated concrete

Very many, who decided to build a house of aerated concrete blocks, are concerned about whether it is possible to put floor slabs on aerated concrete?

Of course you can, only this process must comply with certain conditions:

• The thickness of the walls of the cellular material should not be less than 30 cm;
• The support of the floor slab on aerated concrete should be 20 cm;
• A reinforced concrete belt with a thickness comparable to the wall thickness and 25 cm in height should be constructed along the entire perimeter of the walls of the building;
• Concrete belt must be reinforced.

Note! This belt will allow you to correctly distribute the load exerted on the floor slabs for aerated concrete, eliminating point pressure on the cellular blocks, which may result in deformation or destruction of the structure.

Finally

The overlap created from aerated concrete blocks is a high-quality, reliable and durable construction. Aerated concrete is a lightweight material, so laying such an overlap will not cause absolutely any difficulties. A reliable system of connecting blocks will increase the strength of the concrete floor and reduce the cost of finishing the ceiling surface, because ceilings and so will be perfectly smooth.

And the video in this article will allow you to learn even more about how you can create floors from such modern building material as aerated concrete.