Aerated concrete or brick?

By Admin | Building Materials
07 May 2016

If you really want to understand all the "pros" and "cons" - let's do it together.

One of the main indicators of reliability is the structural strength of wall material.For brickwork it varies from 50 to 150 kg \ cm2.The strength of aerated concrete masonry 5-20 kg \ cm2, that is 10 times lower than brick.Accordingly, the use of aerated concrete has a number of significant limitations.Thus, in accordance with the rules, the use of aerated concrete load-bearing structures as smoking, and the height of the walls is limited by 14 meters, so it is widely used in the cottage construction.

Another limitation associated with the choice of foundation: aerated concrete wall can be built only on a tape or slab foundation, even a small deformation will lead to the destruction of the material.But!If your site is located on a movable water-saturated soil - it is better to abandon this venture and make a choice in favor of ceramic bricks.

Of course, the house of bricks require a solid foundation, because it has

a density of 1000-2000 kg \ m3.Volume weight aerated concrete thermal insulation used for internal partitions, significantly lower (200-500 kg \ m3).A construction-density thermal insulation aerated concrete used for the exterior walls (500-900 kg \ m3), close to the density of the slit (hollow) Brick (1000 kg \ m3).

now on the thermal conductivity, which depends on the thickness of the exterior walls erected.The thermal conductivity of aerated concrete is 0.15-0.3 W \ mGrad.Brick has a high thermal conductivity (0.3-0.8 W \ mGrad), hence the brick wall should be thick aerated concrete.High-quality home insulation is provided at a thickness of gas concrete masonry and brick 375-400mm - 500mm.Hence, bricks require more than aerated.However, to achieve the above thermal conductivity, aerated concrete blocks have to attach a special glue (tonkoshovnaya masonry).But the majority of builders, in order to save, use a cement-sand mortar, and thick seams are cold bridges.Accordingly, the reduced thermal insulation and sound insulation properties of aerated concrete.

second criterion durability of the material is its resistance to frost.Brick (~ 50 cycles) has a significantly higher compared with frost gas concretes (25-35 cycles).This same ratio is, and the durability of the house.If you want your house served not only to you but also to the next generation - choose a brick!

not in favor of AAC and an indicator such as humid shrinkage.The house of concrete blocks in a year or two after the end of construction, reduced in size by 0.3 mm \ m.This entails the possibility of cracking on the individual blocks and the walls.The points of contact of the material with dry heat (near the chimney), the value will shrink even more significant.The walls are composed of ceramic bricks no shrinkage will not give, and this is another plus in his favor.

durability homes reflected the ability of wall materials to absorb moisture: the lower, the longer the term of its operation.Brick has a water absorption of 6-16%, and aerated concrete, this figure could reach 100%.Because of the strong hygroscopic properties can be formed on the aerated concrete mold and fungus.Given these nuances, experienced builders are working on the construction of the walls of aerated concrete in dry sunny weather.Then primed facade, covered with fiberglass mesh, carefully plastered and painted vapor permeable paint.On a brick wall no such trouble, it's much easier.

In respect of fire safety and environmental protection - both materials meet modern needs.If we talk about the speed of construction, the walls made of concrete blocks erected quickly, thanks to their large size.That is, there is a time-saving masonry.However, the bricks come in different formats, including large.For example, in recent years a proliferation of large-scale ceramic stones, are a kind of brick.Speed ​​masonry work of ceramic porous blocks is almost the same as that of the aerated concrete.

Comparing manufacturability two materials, it should be noted that the drilling and sawing concrete, definitely easier.However, its sensitivity to mechanical stress requires a special approach in the installation of windows and doors, furniture and hanging, etc.Brick, in this regard, more robust material.In addition, the options for the facade in a brick house is much more!

If you have difficulty with the choice of material - contact an experienced company managers "Slavda", which not only give a mass of practical tips, and help you choose the material, calculate the number and value, in accordance with your project.

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