How to make aerated concrete blocks do it yourself -

Often, the owners of country houses are interested in the issue of self-manufacturing of aerated concrete blocks, as this will significantly save on construction, moreover, this material has good performance.

General information

Aerated concrete belongs to the class of light cellular concrete, as it contains in its structure of the pore-cell.

Because of this, he has many positive qualities, among which are:

• Low thermal conductivity;
• Good vapor permeability;
• Good sound insulation properties;
• Low weight and pr.

In addition, the price of such material is lower than ordinary concrete, which is associated with its low density, and, consequently, lower consumption of cement and other components in the manufacture.

It should be noted that aerated concrete is of two types:

Production of aerated concrete

So, having figured out how to make aerated concrete blocks, you can conclude that at home you can only make non-autoclaved material. It must be said that with the exact observance of technology, and the use of quality components, you can get blocks with excellent characteristics.

The process of making concrete blocks with your own hands consists of several stages:

• Making concrete in accordance with certain proportions.
• Fill forms;
• Exposure of the product and extraction from the forms.

Equipment

Production of non-autoclaved aerated concrete, as mentioned above, does not require complex equipment, however, there is still some necessary minimum:

• Betonosmesitel – without it it will not turn out to mix qualitatively solution and to mix it with a gasifier.
• Forms - to give the product the correct geometric dimensions.
• Metal strings - needed to trim the excess solution from the top of the form.

Forms

Before proceeding to the manufacture of blocks, forms should be prepared. They can be bought or made independently. To do this, you will need boards with one side carefully brushed.

From these boards it is necessary to assemble a wooden case into which lintels are inserted. With the help of such inserts, the inner space of the case is divided into compartments. Jumpers can be made of plywood. For their fixation in the boards cuts are performed.

As it is easy to guess, the dimensions of the blocks will depend on the cell sizes. Determining the cell sizes, you can calculate in advance how many aerated concrete blocks are in 1m3, and if necessary, you can correct the dimensions.

To speed up the process of manufacturing a material, it is desirable to make several forms of all the required standard sizes. First of all, it is necessary to make the calculation of aerated concrete blocks, according to which to prepare the optimal number of forms.

Tip! To prevent the solution from sticking to the boards, the inside of the cells should be well oiled with used engine oil. This procedure must be performed before each fill.

Preparation of the solution

The composition of aerated concrete blocks is quite simple:

• Portland cement;
• Quartz sand;
• Water;
• Additives - aluminum powder, lime, sodium sulfate.

To obtain a quality mixture, you must strictly observe the proportion:

Instructions for preparing the solution is as follows:

• Primarily mixed with cement and sand.
• Then water is added to the composition, and the mixture is thoroughly mixed.
• Gradually, other components are added to the solution and mixed well.
• At last, aluminum powder is poured.

It must be said that the stage of preparation of the solution is the most responsible, since it is very difficult to guess successful proportions, and this can be done only by experience. The proportions largely depend on the quality of the sand, the brand of cement, and other components. Even water affects the course of a chemical reaction that occurs when a blowing agent is added.

Note! Sodium compound may not be used. This component serves to accelerate the process of hardening the composition.

Therefore, there is no specific recommendation for the manufacture of aerated concrete at home.

Fill

Casting forms is a fairly simple process, however, requiring some care and attention. Fill out the forms to half, after which, as a result of a chemical reaction, the composition will begin to rise.

An increase in volume usually occurs within 5 to 8 minutes. The reaction time depends on the ambient temperature. After some time, the reverse process will begin, i.e. the mass will drop a little.

When the position of the mass is stabilized, the upper bumpy part should be cut with a metal string. Then the composition must be aged until the concrete product hardens, it usually takes 20-24 hours. After this period of time, the blocks must be removed from the molds and placed on a flat surface until fully cured.

Note! In the manufacture of foam concrete blocks, care must be taken that there are no drafts in the room.

After successful completion of the first batch of blocks, you should calculate the number of aerated concrete blocks required for construction. After this procedure should be exactly repeated. Here and all the main nuances of the production of aerated concrete blocks, having familiarized with them, you can independently ensure the construction of the necessary building material.

Conclusion

As we found out, making a non-autoclaved aerated concrete is not difficult at all. The most important thing in this operation is to find the optimal proportions of the components. In addition, you will have to spend some time and effort on the manufacture of forms, however, all these costs will be justified by the savings in financial resources during construction.

From the video in this article, you can get more information on this topic.