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August 12, 2017 18:05

aerated concrete

Modern builders are very demanding on the materials that they use every day in their work.The basic material for the construction of buildings must be very durable and reliable, but at the same time - light and easy to installation.The desire for such parameters has led to the fact that there was concrete, which by its parameters considerably exceed the brick and wood!

Content

  1. What is the aerated concrete?
  2. Specifications aerated
  3. Advantages Disadvantages
  4. Video

What is the aerated concrete?

Despite the fact that this material has only recently, almost all the positive reviews of the aerated concrete.It is only talk about one thing: aerated concrete - it is a unique building material, without which there will soon not be able to do any one builder.

Aerated relates to aerated concrete.The porous structure due to the composition of the material production technology.Among the components included in this material - cement, water, lime, silica sand, aluminum powder.The last

component necessary for reaction with the lime, hydrogen is produced as a result of this interaction.It becomes the basis of porosity.

Specifications aerated

There are several classifications of concrete blocks with specific technical characteristics.Today during construction apply the following grades of this material.

  1. D 350 .This grade is considered malovostrebovannoy.Because of insufficient strength (0.7-1 MPa), it can only be taken as a heater.This type of thermal insulation.Coefficient of thermal conductivity varies between 0.8-0.9 W / (m * ° C).
  2. D 400 .From this brand make constructional and insulating blocks.This type of arrangement is used for insulation, to work with the openings in the construction of multi-storey buildings monolithic method.His strength is higher than in the previous version - 1-1.5 MPa.The values ​​of thermal conductivity - about 0,1-0,11 W / (m * ° C).
  3. D 500 .This variety is used in the construction of low-rise buildings and concrete construction.Its strength - 03.02 MPa, and its inherent thermal conductivity - 0,12-0, 13 W / (m * ° C).
  4. D 600 .The strongest kind with values ​​- 2.5-4.5 MPa.Decent thermal conductivity - 0.14-0.15 W / (m * ° C).The properties of aerated concrete allows fixed to the wall, created from the variety of material, ventilated facades.The last two species are the basis for building blocks.

Digital signage brands previously mentioned, shows the density of the material.In particular, D 500 - density is 500 kg / m³.

There is a classification based on the method of production.There allocate 2 varieties:

  • autoclave (autoclaved under the influence of a temperature of 200 ° C and 10 - 12 bar pressure);
  • non-autoclave (drying, curing is in normal conditions).

first variety is more expensive.This is due to significant manufacturing costs, as well as the best technical characteristics of concrete blocks produced by this method.They are much stronger than their thermal conductivity is less.The pores in such aerated exclusively distributed evenly, which affects the strict compliance of the material specified parameters.

Typically, aerated concrete blocks, as in the photo, have a weight of around 20 kg and can replace about 16 bricks, the weight of which would have amounted to about 60 kg.In addition, the building material has excellent strength properties and low heat conduction level.About all the pros and cons of aerated concrete, you can see in the video review.

Benefits

main advantage of aerated concrete - is its environmental friendliness!This material is completely safe for the environment, animals and humans, because it is made from natural ingredients: sand, lime, cement and aluminum powder (a small fraction).

can also highlight other benefits of aerated concrete:

  • High level of fire and frost.This material is capable of withstanding fire for seven hours, and more than two hundred and frost cycles;
  • Excellent thermal insulation properties.The building of such a material will always be warm and cozy;
  • processing ease.Despite its high durability, concrete can be quite easily processed using any tools;
  • durability;
  • Savings masonry mortar for finishing materials for the construction of speed
  • Affordable

Disadvantages

The most important disadvantages of aerated concrete - a low moisture resistance and poor resistance to various kinds of deformations.This building material absolutely does not tolerate high humidity, so it needs further treatment.For example, it can be simply plastered or oblitsevat using tiles.Also, this building material has poor sound insulation.

Aerated hardly suffers deformation: tension and bending.However, this drawback is easily eliminated!To avoid it, any buildings and construction of aerated concrete needed to build on a solid foundation.The ideal option would be a solid foundation of heavy concrete.

Video