Currently, the increasing popularity receive cellular blocks. Manufacturers claim the longevity of this material, which allegedly serve about 100 years. Let's see if this is the case?
The true story
Everyone knows how durable wood or brick, because everyone must have seen the building of brick and wood house with a lifetime of about 100 years.
At the same time, Russia is not observed a significant number of structures of concrete blocks, which for more than three decades.
All information about Aerated lifetimes are taken from the track to the structure of this material in America and Europe. These homes are operated with the 20-ies of the last century to the present. In our country too, there are such buildings.
For example, in St. Petersburg there are aerated concrete structure, built 60 years ago. In this case the outer parts of buildings offline finishing. From this it follows that the claimed durability of concrete blocks based on the real construction examples.
What long will the building of aerocrete?
Two myths about the aircrete is now widespread:
1. Unreliability and short service life of the material.
Aerated concrete stamps D500 and D600 can withstand bearing load in several floors. This is confirmed by studies in the laboratory and low buildings, in which the load-bearing walls of aerocrete.
2. When impregnated with moisture aerated susceptible to rapid degradation.
It is also a myth. Due to the porous structure of aerocrete in fact actively saturate with moisture, but a large number of air pores just serve as an obstacle to the full absorption of water.
In this regard, gazoblok absorb water only 20-25% even in the rain without water repellent impregnation. The inner part of the wall is dry. But at the same time a systematic wetting bearing structure leads to a decrease in thermal insulation.
What, in fact, It affects the durability of aerated concrete slabsSo it is frost. Cyclicity of the freeze-thaw durability decreases.
Figure frost neavtoklavnyh aerated concrete slabs F100, ie aerated concrete can withstand 100 cycles of freezing and thawing. If this is taken into account, the building is able to survive 100 years or more!
What affects the durability of aerocrete
The life of the buildings affected by the following factors:
- foundation - adopted an overabundance of weight will lead to cracking;
- heater - Allows you to move the "dew point", in connection with which the walls of the building does not accumulate condensate;
- building facade - optimally arrange a ventilated facade, which protects the building from rain and does not interfere with the removal of condensate.
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