Aerated concrete D500 (aerated concrete block D500) - characteristics, advantages and disadvantages, scope of application

Aerated concrete D500 is an autoclaved cellular concrete that is widely used in the construction of partitions for low-rise buildings and monolithic frame construction of high-rise buildings. Aerated concrete blocks of different thicknesses are relevant for creating both internal and external walls of buildings with seasonal/year-round occupancy.

The D500 aerated concrete block is produced in the shape of a rectangular parallelepiped, the geometry is preserved with an accuracy of 1 millimeter. The blocks are equipped with a tongue-and-groove system on the vertical side, which greatly facilitates and strengthens the masonry. For ease of grip, blocks are often made with special pockets, which also has a positive effect on the installation process.

Modern manufacturers offer aerated concrete blocks in a wide variety of sizes - you can select the material taking into account the desired height, thickness, length, average density, and other properties.

Aerated concrete blocks grade D500

Aerated concrete blocks of the D500 brand are made from cement, quartz sand with the addition of lime and water. The creation of high-quality blocks that meet the specifications is only possible in a factory environment. First, cement, ground quartz sand, lime and water are mixed in a special mixer, then aluminum paste is added in the required volume (it is responsible for the appearance of pores in the structure of the material).

In a humid, warm chamber, the solution increases in volume due to the formation of a large number of pores and gains its initial strength. Next, the frozen mass is transported to cutting equipment, and blocks with ideal geometry are formed. The material gains final strength in an autoclave oven, where it is exposed to high water vapor pressure and temperatures in the region of +175-200 degrees.

Thanks to the use of high temperature in production, it is possible to obtain high-quality and durable gas blocks, ensuring that they will demonstrate all the declared characteristics.

Advantages

D500 gas blocks have greater density and strength compared to smaller grade blocks. So, for example, the force required to pull out a dowel in the D500 is 15% greater than in the D400.

There is also a difference in frost resistance - D500 copes better with cold weather, although it also demonstrates lower heat saving indicators. The brand can be successfully used in the construction of buildings up to 5 floors high.

The main advantages of D500 gas blocks:

• High level of mechanical strength, compressive strength
• Low shrinkage rate
• Good density, which allows you to build reliable and durable structures
• Light weight due to the presence of a huge number of pores in the structure
• Ideal geometry, which saves money on finishing
• A good indicator of vapor permeability - the walls can breathe, mold and mildew do not appear

• Relatively affordable price
• Low thermal conductivity
• Simple and quick installation - thanks to the low weight and precise geometry of the blocks
• Fire safety, environmental friendliness, no toxic emissions
• Excellent sound insulation
• Ease of processing of any type - gas block is easy to cut, saw, etc.
• Minimal seam and excellent adhesion to other materials (provided that special glue is used)

Any characteristic of a building material involves analyzing not only the pros, but also the cons. Among the disadvantages of aerated concrete blocks, it is worth mentioning such as the fragility of the material and the need to work with them very carefully, the importance of using the correct fasteners to ensure the required rigidity of the connection, and high water absorption (which can be eliminated by proper finishing).

Main settings

In factory conditions, the material is produced according to the technological documentation adopted at the enterprise, in accordance with GOST. Finished blocks can be produced with locking elements, special pockets for gripping, technological non-through and through voids.

Aerated concrete block size

The standard size is set in accordance with the functional purpose of the product:

• smooth block – length – 600.00 mm, height – 200.00 mm, width – 200.0/250.0/280.0/300.0/360.0/400.0/500.0 mm;
• block for partitions – length – 600.00 mm, height – 200.00 mm, width – 75.00/100.00/120.00/150.00 mm;
• jumper block – length – 500.00 mm, height – 200.00 mm, width – 250.0/300.0/360.0/400.0 mm.

The maximum permissible width of any products is 625.00 mm, width – 500.00 mm, height – 500.00 mm . If the blocks belong to the first category, deviations in geometric dimensions do not exceed 1-3 mm, for the second - 3-4 mm. At the request of the consumer, products of non-standard sizes can be produced, but subject to maximum deviations.

Thermal insulation blocks have a density grade of D300-D500, structural and thermal insulation blocks - D500-D900, structural blocks - D1000-D1200. In order to build a house with good thermal insulation and load-bearing capacity, it is better to take D500

Labeling example

Block I/600х300х300/D500/В2.5/F20 GOST 31360 2007

Explanation: block of the first category, height 200.0 mm, length 600.0 mm, width 300.0 mm. Medium density grade D500, class B2.50, frost resistance – F20.

Average density

If we consider factory-made aerated concrete, the density, based on standard indicators, can vary from 200 to 1200 kg/m³. In product labeling, this parameter is marked with the letter D, that is, the material is standardized by brand. In private construction it is advisable to use D400-D600.

The load-bearing capacity of the material is enough to build an object up to three floors , however, a special reinforced concrete armored belt will be required and this, in principle, is not recommended. The master will be forced to use denser aerated concrete with lower thermal insulation. The result is an increase in construction costs.

The dependence of physical and technical parameters on density is considered in tabular data:

Flexural strength

Aerated concrete has low bending strength, the material is practically devoid of elasticity . The slightest deformation of the base can lead to cracks in the entire structure. A house made of cellular concrete requires a monolithic foundation or a good base made of heavy concrete. If you plan to build a small house, this is simply impractical, and the construction of another foundation generally deprives all actions of any meaning.

Compressive strength

The strength of non-autoclaved and autoclaved aerated concrete is characterized by classes. According to the current standards for the material, they are set as follows - B0.35, B0.50, B0.75, B1.0, B1.50, B2.0, B2.5, B3.5, B5.0, B7.5, B10.0, B12.5, B15.0, B20. For private construction, the compressive strength class must be at least B1.5 .

Stable characteristics of strength and density are determined by the coefficients of variation (SN 277, GOST 27005/R53231). The density indicator should not exceed 5%, and the strength indicator should not exceed 15%.

Frost resistance

Taking into account winter temperatures, grades of material are assigned and controlled for frost resistance . This indicator allows you to understand how many freezing and thawing cycles the block can withstand after water saturation. For aerated concrete, the frost resistance grade can be F15, F25, F35, F50, F75, F100.

Maximum frost resistance is achieved in dense aerated concrete. This is not a thermal insulation material, but a structural material that requires insulation costs

Recommendations for use in private construction:

• F25 – for products used in external walls (GOST aerated concrete blocks);
• F15 is for others.

The ratio of brands and frost resistance classes is shown in the table:

Vapor permeability and thermal conductivity

All parameters are indicated in the table data:

Based on the thermal conductivity parameters, it can be understood that the optimal wall thickness is at least 0.64-1.07 m . Of course, an individual developer can build thinner walls, however, under stable moderate climate conditions, without thirty-degree frosts.

Other characteristics of gas silicate blocks

If the master is building from gas silicate blocks, the technical characteristics discussed below may be useful:

• radiation - specific effective activity of radionuclides should not exceed 370 Bq/kg;
• fire hazard - the material belongs to the non-flammable group;
• shrinkage upon drying should not exceed 0.50 mm/m (aerated concrete blocks GOST 31360 2007).

When building a house, it should be taken into account that blocks made of cellular concrete cannot be used as the main material for the walls of bathrooms and toilets.

Holiday humidity

The parameter under consideration should not exceed the specified values ​​(% by weight):

• 25 – sand-based aerated concrete;
• 30 – made with oil shale ash;
• 35 – block of cellular concrete based on ash.

Characteristics and Application

The main characteristics of the blocks are very high - this is precisely why the material is becoming more and more popular every year. D500 demonstrates high strength and other indicators.

Main technical characteristics of the D500 gas block:

• Dimensions – thickness/width ranging from 75 to 500 millimeters, height 200 millimeters, length 500/600 millimeters
• Density – within 500 kg/m3
• Strength – corresponds to class B2.5-3.5
• Thermal conductivity – 0.13 W/(mS)
• Frost resistance – within F35-100 (the number of freezing/thawing cycles that the material can withstand without loss of properties and deformation)
• Porosity – about 85%
• Fire resistance – buildings made of aerated concrete blocks belong to fire resistance classes I/II
• Weight – 24.7 kilograms with a standard block size of 60 x 30 x 20 centimeters

The scope of application of the material is quite wide and is determined by its characteristics. Thus, blocks with a thickness of 75-150 millimeters are suitable for creating interior partitions. For wall structures (external) with seasonal residence in the warm season, blocks with a thickness of 200-250 millimeters are used. Blocks with a thickness of 300 to 400 millimeters are suitable for laying the external walls of buildings with year-round habitation.

Due to their high strength indicators, aerated blocks can be used in the construction of various types of structures in buildings up to 5 floors high: blocks of minimum thickness for internal walls, maximum thickness for external ones.

Installation of the blocks is easy and quick; they are placed on a special adhesive composition. Before laying the first row, be sure to check the evenness of the base and level it, if necessary. Then temporary guides are installed (you can take a wooden block, for example), and mounted partitions are leaned against them.

The laying of the first row of blocks requires special attention; if done correctly, further work will proceed easier and faster. The adhesive composition is applied to horizontal and butt seams.

The surface of each row is leveled with a special grater, making sure that there are no level differences between adjacent blocks (this can cause cracks to appear). The second and subsequent rows are made staggered, shifting the vertical seam by half the block.

Price list for cellular concrete in Moscow and Moscow Region

FULL PRICE LIST

Wall blocks for laying with glue.

Blocks made of autoclaved cellular concrete, first category (for masonry with glue) produced by OJSC "Belarusian Cement Plant", D500 or D600, packed in film on a pallet, with delivery throughout the city of Moscow and the region:

7600 rub/m3

— Minimum order — 1 machine (can be equipped with different sizes)

Blocks made of autoclaved cellular concrete, first category (for masonry with glue) produced by Gazosilikatstroy, Belarus, D500, packed in film on a Euro pallet, with delivery throughout Moscow and the region:

7700 rub/m3

Blocks made of autoclaved cellular concrete, first category (for masonry with glue) produced by Yegoryevsky Construction Materials Plant LLC, D500, packed in film on a Euro pallet, with delivery throughout Moscow and the region:

7700 rub/m3

— Minimum order — 1 car (can be equipped with different sizes) — The price includes pallets and delivery to anywhere in Moscow and the Moscow region.

Blocks made of autoclaved cellular concrete, first category (for masonry with glue) produced by JSC Mogilev KSI RB, D500, packed in film on a Euro pallet, with delivery throughout the city of Moscow and the region:

7700 rub/m3

— Minimum order — 1 machine (can be equipped with different sizes)

Blocks made of autoclaved cellular concrete, with a tongue-and-groove system, first category (for masonry with glue) produced by JSC Mogilev KSI RB, D500, packed in film on a Euro pallet, with delivery throughout Moscow and the region:

— Minimum order — 1 machine (can be equipped with different sizes)

Partition blocks for masonry with glue.

Partition blocks made of autoclaved cellular concrete, first category (for masonry with glue), D500, packed in film on a Euro pallet, with delivery throughout Moscow and the region:

7600 rub/m3

— Minimum order — 1 machine (can be equipped with different sizes)

— Minimum order — 1 machine (can be equipped with different sizes)

Wall blocks for laying on mortar.

Blocks made of autoclaved cellular concrete, category 2 (for mortar laying) produced by JSC Mogilev KSI RB, D400-D500, with delivery throughout Moscow and the region:

99 RUR/piece

Blocks made of autoclaved cellular concrete, category 2 (for mortar laying), D400-D500, packed on a Euro pallet with delivery throughout Moscow and the region:

102 rub/piece

— Minimum order — 1 machine (can be equipped with different sizes)

Partition blocks for laying on mortar.

Partition blocks made of autoclaved cellular concrete, second category (for mortar laying) produced by JSC Mogilev KSI RB, D500, with delivery throughout Moscow and the region:

Reinforced bar lintels.

Prices for reinforced block lintels produced by JSC Mogilev KSI RB, with delivery throughout the city of Moscow and the region:

from 651 RUR/piece

Main manufacturers

In Moscow and the regions, you can purchase aerated concrete blocks from many manufacturers who offer high-quality material with the required characteristics.

The best manufacturers of aerated concrete:

• CJSC Ksella-Aeroblock-Center produces YTONG blocks of different brands
• Poritep NN LLC (Nizhny Novgorod) – blocks under the Poritep brand
• LLC "ECO" - aerated concrete under the brand of the same name, quality confirmed by certificates and tests
• CJSC Klintsovsky Silicate Plant - produces EuroBlock
• JSC "Bonolit - Construction Solutions" - supplies Bonolit blocks to the market
• XELLA is a German construction company, aerated blocks of the best quality, using the best modern technologies and good materials

• EuroAeroBeton is a relatively young plant located in the Leningrad region, using German equipment and technologies in its work.
• “Voronezh Construction Materials Plant” is a leader in Voronezh and regions close to it, a reliable company offering quality products
• AEROC - works on German equipment, produces various aerated concrete blocks of the best quality and high thermal protection
• UDK is a large Ukrainian manufacturer of premium blocks using autoclaved aerated concrete technology, using high-quality materials and high-precision equipment
• "Stonelight" - a Kiev enterprise working with German lines, carefully controls the quality of raw materials, adherence to technology, has received a high expert assessment

Also operating in the regions are LSR.Construction-Ural, Kazan Plant of Silicate Wall Materials, Lipetsk Silicate Plant, Perm Plant of Silicate Panels, Saratov Construction Materials Plant, Kostroma Silicate Plant, etc.

Aerated concrete D500 is a modern building material that is used in the construction of a wide variety of buildings and offers many advantages over more traditional types of concrete.