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August 12, 2017 18:08

Aerated concrete and foam concrete - not the same thing !

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Aerated and foam concrete - look for differences

that the outer surface that peeling, texture, and partly on gas and foam texture almost identical, but the key word here is "almost."For the uninformed person, these materials are interchangeable and often sellers are ignorance of customers, significantly increasing the price of foam with the accompanying assurance that it is the same concrete, only manufactured by a different technology.

But the fact of the matter is that if the first is a conventional cement-lime mixture with the addition of a foaming agent based on proteins, the second consists of the same components with the addition of aluminum powder, which gives a reaction with gas evolution.The result is two cellular building blocks, porous, light, but replace one another you are unlikely to - the result of working with them will be different.

short definition of these blocks is as follows: autoclave aerated concrete is a product, foam - no.More specifically, the first after mixing is kept almost full cure, then cut the strings into blocks of desired size, which sent to the autoclave for the evaporation of moisture remains, the second just freezes in the forms until tender.

What to choose - or foam block gazoblok?

If you need a cheap material, and durability of the house is not a fundamental factor in the construction of, for example, a summer residence, the foam - this is exactly what you need.To make it you will be able themselves, by renting a small unit.The raw material should be fine treadable many components, such as ash, sand, and even brown river.

promiscuity in the choice of raw materials could reduce the environmental performance of the material.

If you face a question, choose the foam block or gazoblok, but you do not build a temporary barracks, and, so to speak, generic country estate that want to leave a legacy to children and grandchildren, it is better use the autoclave cellular building blocks.The fact that the foam, being a product of rather primitive process is short-lived material, and only from the aerated concrete building can stand more than 50 years without loss of quality factor.

Still, it's better gazoblok or foam block?

Let's do a little comparison of the characteristics of these two materials in order to identify their main strengths and weaknesses to determine the most likely preferred option. density of both building blocks of the same in one case only if it corresponds to the figure of 700 kg / m3, but this number is minimal for foam density, and for gazoblokov - maximum .

Furthermore, this characteristic of the latter is descending in the following order: 700, 600, 500, 400, 350. If we consider the blocks, the picture is different - 700, 800, 900. On the basis of density, we obtain a high thermal conductivity of foam concrete (0.24 W / m'K) with the need to make it thicker walls, as opposed to the lower rates of the same characteristics of aerated concrete (0.12 W / m'K).Please note that due gazoblokov home 2 times warmer than that of the foam.

without significance is also the fact that the first collected by bonding wall elements with special glue, which layer thickness is less than 1 mm, which does not leave any loopholes cold.Masonry foam blocks by using a conventional cement mortar, which is excellent for the cold bridge.Perhaps you can not articulate that better gazoblok or foam block.

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