How to build a house of aerated concrete and do not regret

Aerated concrete is increasingly gaining popularity as a material for the construction of town houses, garages and other buildings

Content:

• advantages of aerated concrete
• cons aerated
• Choosing a high-quality material
• Design of stations and SP 339.1325800.2017 501-52-01-2007
• Armiruem walls of aerated concrete according to SNIP 3.03.01-87 "Bearing and enclosing structures"
• Imprisonment or seven times Learn - Build!

Topics repeatedly appeared on our website, where the authors asked for advice about how to choose the material for the walls.

elenamir

Participant FORUMHOUSE

We decided to build a house. What material is better to build?

marsNRG

Member FORUMHOUSE

Hello. I need your help Dear friends. we want build one-storey house with an attic in the spring of 2014, for permanent residence, the land of 10 hundred, the question of what material to build? We consider bricks, concrete blocks, gazoblok and other building materials. There are geological surveys carried out in December 2013. Is applied to the subject. Please see and advise whatever house, from which to build on what foundation money 1.7 million rubles. I would like a house of 100-120 square meters. m premises without any frills, simple, square, the size as it will. The foundation + box + roof house dvuhskatka, and of windows with doors without finishing. Thanks in advance. Happy New Year 2014, all successful construction.

PairOfDeuces

Member FORUMHOUSE

in the building itself or a boom-boom, so I apologize in advance if something is not write. Parents planning to build a house and asked to check on the Internet that write about the wall blocks. Father leans conservative and "the old" build of brick. I, of course, for all new: concrete blocks, aerocrete, etc... About advantages of certain blocks of more or less clear. They are painted in great detail on the sites of manufacturers. I would like to know what are the disadvantages.

In all these branches of aerated concrete is rightly not be ignored. On this article we have said many times on our website. Read more about the variety of lightweight concrete can be Collections.

Why did aerocrete become so popular, and why there are doubts on the stage of selection of the material? Let's first focus on its pros and cons.

advantages of aerated concrete

• As part of the aerated cement, sand, water, lime and aluminum powder. Last acts just as a blowing agent. Through this resource base of one of the advantages of aerated concrete is its environmental friendliness.
• The air permeability of the material, or its ability to "breathe."
• Aerated concrete thermal conductivity is comparable to wood. Blocks accumulative possess properties that they retain the natural heat from the outside and inside artificial heating.
• The undeniable and immense advantage of aerated concrete is the ease of working with the material. It is lightweight, blocks are quite large in size, which provides a high speed of construction. Aerated concrete is easy to saw, drill, Stroebe.
• Aerated concrete and refractory hardy material.
• A final, but important advantage - strength and durability. Aerated concrete is recommended to apply even in earthquake-prone regions.

cons aerated

But as you know, the ointment fly in the ointment does not happen, so always follow the advantages of disadvantages. Aerated concrete, though great stuff, not the exception.

• He is hygroscopic. This problem is solved exterior trim of the house.
• Difficulties with the exterior finish of the building. To finish suitable not for any material if you want to save all the properties of aerated concrete. Often, preference is given to the plaster.
• Honeycomb blocks susceptible to deformation, the presence of errors, such as foundations.
• Problems with fasteners. It is necessary to use special fasteners for cellular concrete.

As we can see, the pros certainly more, and most of the disadvantages can be avoided by a competent and visionary approach to construction, without which all begin construction becomes an adventure.

The service life of buildings of aerated concrete estimate of 70 years. But that house is really served faithfully for at least two generations, it is necessary to observe all the rules and build on knowingly invented rules.

Choosing a high-quality material

Qualitative autoclaved aerated concrete must be produced in accordance with GOST 31359-2007 "Concrete autoclaved cellular". The document details the physical, chemical and thermal characteristics of concrete of different grades, classes strength, thermal conductivity and vapor permeability, the requirements for the materials from which are manufactured aerated.

Depending on the average density of aerated concrete separated marks 14: D200, D250, D300, D350, D400, D450, D500, D600, D700, D800, D900, D1000, D1100, D1200. Brand means material density in kg / m³. That is, the density of aerated concrete D500 is 500 kg / m³.

15 cellular concretes have a compressive strength classes: V0,35; B0,5; V0,75; V1,0; V1,5; V2,0; V2,5; V3,5; AT 5; B7.5; AT 10 O'CLOCK; V12,5; B15; V17,5; IN 20. Class value indicates what load in Newtons withstand square millimeter aerated. That is, at B0,5 square centimeter of the material can withstand a load of 50 kg.

For load-bearing walls of single-storey buildings will be quite aerated D400. For two-storey stands to choose already D500, but for the higher structures of the D700 and above.

To understand that you purchased a building material really has declared characteristics, make sure that the dealer or manufacturer has the relevant supporting documents.

Design of stations and SP 339.1325800.2017 501-52-01-2007

When designing advise to familiarize with the Standard of the Russian Builders Association STO 501-52-01-2007 "Design and construction of shells of residential and public buildings with the use of cellular concrete in Russia." The document can be found about the calculation of the bearing capacity of the walls, the rules of work performance and other information that may be useful.

We distinguish several useful general points:

• For external walls it is recommended to apply the glue with a density less than 1500 kg / m³ dry.
• Brand adhesive adopted according to the results of calculation of the bearing capacity of the wall not less than M50.
• Aerated concrete is used for the construction of exterior and interior walls to indoor air humidity of 75% for non-aggressive environment. When the aggressive environment of their application without additional protection is not acceptable.
• Acceptable masonry exterior walls in a single unit or two (the same type or of different types). In the former case requires a "chain" ligation small blocks with overlapping seams at least 10 cm. In the second case, you need to provide the offset vertical joints of more than 10 cm.
• Conjugation of internal and external walls is carried out by ligation of small blocks or anchors (4-6 mm steel braces, T-shaped or anchor strip steel 4 mm thick).
• The walls of aerated concrete should be waterproofed by a brick or concrete.
• The thickness of the horizontal joints shall be from 10 to 15 mm, the thickness of the vertical joints taken from 8 to 15 mm. The average of these indicators 12 and 15 mm, respectively.

With the May 2018 order of the Ministry of Construction approved as another useful document for those who are planning construction of aerated concrete. it Rulebook 339.1325800.2017 "Construction of cellular concrete. Design Rules ". In it, you'll find the requirements for the calculation of strength, crack resistance, deformation, masonry walls.

The main characteristics of aerated concrete strength are the standard values ​​of resistance to axial compression, axial tension resistance, shear resistance.

Armiruem walls of aerated concrete SNIP 3.03.01-87 "Bearing and enclosing structures"

That in the future the structure is not cracked, you must:

• make reinforced strip foundation, laying depth below freezing;
• do reinforcement every 2-3 rows of masonry;
• do monolithic reinforced concrete bridge over the windows and doorways;
• provide reinforced concrete Laying nets on supporting walls by overlapping plates.

If you are using the most common blocks D500 and 600 is recommended to carry out reinforcement every three rows.

Reinforcement may be performed by the following methods:

• reinforcement rods. According to the above SNiPY with longitudinal strengthening rods joined together by welding. Joints smooth reinforcement can not be welded, the ends are overlapped by 20 diameters, complete with hooks and tie wire. For a wire diameter of 8 mm overlap should be 16 cm.
• reinforcement mesh. Using the grid of more than 3 mm will increase the thickness of the solution layer. A transverse amplification of small blocks on the inner surface of the partition must extend for 2-3 mm diameter is used for more than two valves.

By the ends of floor slabs should provide monolithic closed belt in preparation for the work on which will help Rulebook 63.13330.2012 "Concrete and reinforced concrete structures. The main provisions. " Here are some requirements from this joint venture:

• the thickness of the layer of concrete is taken not less than the diameter of a rod with a diameter greater than 10 mm reinforcement, with a diameter less than 10 mm - 10 mm;
• the distance between the armature should be less than 5 cm for the bottom valves, 3,5 cm - horizontal upper and 2.5 cm - for inclined or horizontal bottom;
• diameter transverse reinforcement is considered to 0.25 of the largest diameter of the longitudinal reinforcement, for frames without welding at least 6 mm;
• Anchoring can be straight, with bend, with welding, as well as the cross bars.

Imprisonment or seven times Learn - Build!

The oldest building of aerated concrete, which is able to find on the Internet, is a house in the capital of Latvia at the address: ul. Elviras, d. 15. If you believe the date of construction, but this year the home exactly 80 years! Therefore, we can safely expect that if you do everything according to the standards that are invented for a reason, then your house will serve you faithfully for decades.

Decided on construction of aerated concrete? Find out, how you can save on a facade finishing without losing appeal. And we have a cool life hacking of both of aerated concrete is possible to make a reliable ladder. We Also Recommend an overview of the house of aerocreteWhich is heated by the heat pump.

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