Comparison of the composition of gas blocks and foam blocks
Aerated concrete is produced only on the basis of environmentally friendly, high -quality raw materials. The composition of the product includes lime, made on the basis of the most modern equipment through special technology, which ensures the exemplary quality of the material produced.
Foam blocks, as a rule, are made on the basis of foaming agents from various waste with a limited shelf life and changeable properties – tannic extracts of leather production, co -apple, underground and sulfite alkali. Therefore, its composition is very complicated, and the technical characteristics are constantly changing.
Production of aerated concrete and foam concrete
The most important stage in the process of production of aerated concrete is autoclaving, since it is then that the material receives such an important characteristic as strength. Autoclant processing is carried out within 12 hours at a temperature of 190 ° C and a pressure of 12 atmospheres. As a result, gas blocks are characterized by the necessary degree of bearing capacity.
Unlike aerated concrete, the production of foam concrete excludes autoclaving, as a result of which this material has the ability to harden in natural conditions, t. e. conditions characterized by the absence of high temperatures and atmospheric pressure.
Foam concrete shrink
Another disadvantage of foam concrete is its shrinkage or in other words, the deformation, the cause of which is the loss of foam concrete so necessary moisture. As a result – when the material is used over time, cracks appear on the walls, which can lead to their subsequent destruction.
Mummy and foam concrete moisture indicators
The humidity of aerated concrete at a relative humidity of 75 percent cannot exceed 4 percent, and with a relative humidity of 97 percent-5 percent. The same values of relative humidity for foam concrete determine the figures of 8-10 percent on the sand and 12-15 percent on the ash, as well as 12-15 percent on the sand and 18-22 percent on the ash, respectively. These humidity indicators once again speak in favor of aerated concrete as a priority compared to foam concrete material.
Packaging of gas blocks and foam blocks
Here, gas blocks are again one step ahead of the competitor, since their packaging reliably protects aerated concrete from external influences – rain or snow, dust and dirt. In addition, packaging is sometimes not superfluous when building a house.
Foam concrete has no packaging at all.
Comparison of the geometric accuracy of gas blocks and foam blocks
Gas soster blocks are characterized by excellent accuracy of geometric sizes – indicators of height, length and thickness deviations are very small. While foam blocks, on the contrary, have very large deviations, so their accuracy of geometric sizes is far from the perfect. Therefore, according to tests, this material cannot be called suitable for high -quality wall laying.
Masonry of aerated concrete and foam concrete blocks
In aerated concrete blocks, as a rule, a special solution is used to reduce heat loss after building a house to a minimum, to perform all the stages of construction work as soon as possible, saving the time and money to pay for employees and provide the smallest indicators of the load on the wall. As well as save a significant part of the money compared to expenses for a regular cement-sand mortar.
Masonry of foam concrete blocks is possible only if the usual cement-sand mortar is used.
From an economic point of view, laying 1 cubic meter of a wall of aerated concrete blocks on a special solution cost approximately 3 times cheaper than masonry 1 cubic meter of a wall of foam concrete blocks based on a conventional cement-sand mortar!
In conclusion, it is worth saying that the assortment of gas silicate blocks offered on the market is much wider than the assortment of foam blocks, limited only by rectangular forms of material. Therefore, the use of aerated concrete in construction work is more profitable in all respects!
