Concrete block: types and characteristics

Concrete block-a novelty on the market of building materials, and the majority treats them with a fairly high degree of alertness. However, the experience of recent years confirms their reliability, efficiency and low cost and ease of processing, increase the popularity. They can be used in the construction of load-bearing and curtain walls, in Foundation, fences, etc.

Concrete block can have a different:

• Size and shape (smooth or grooved);
• Filling (heavy concrete, light and porous).

The Blocks of heavy concrete usually used for the installation of foundations and basements. They are dense and durable, can withstand large loads, are not afraid of temperature extremes and high humidity. In addition, they have stringent requirements for dimensional accuracy: the allowable variation shall not exceed 2 mm. Blocks of heavy concrete may be reinforced concrete and Postanovlenie (they are often used for the construction of private homes). Concrete is distinguished by the presence of a skeleton of steel rebar or wire, which gives them increased resistance to shrinkage and expansion.

Concrete block lightweight concrete is more often used in the construction of walls (used as insulation). To reduce the weight adds porous materials: slag, expanded clay, pumice, etc. the larger the fraction of the slag, the easier it is concrete block. Depending on weight changes and the use of the material: large particle (light) often used as insulation, fine – for the erection of walls.

Keramzit as filler for concrete is an ideal variant on a ratio the price/quality. Blocks of concrete have a high strength, good insulation, low conductivity, minimal water absorption. But the walls from this material require additional insulation. The disadvantages of this material include fragility, inaccuracy of block sizes and processing complexity.

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Cellular concrete – the most popular type of material for private housing. The most common silicate and aerated concrete blocks. The price of this kind of material fairly moderate, which in combination with high performance and led to its popularity. The mass of each element is reduced due to foaming of the binder element. Products from cellular concrete has a high sound and thermal insulation properties, do not burn and have low permeability. Aerated concrete block easy to handle: it is easy to saw, cut and drill. in addition, all “bricks” have accurate dimensions. If you bought the concrete blocks 20х20х40, the variation in size will not exceed 1-2 mm, which gives the opportunity to hold them together is not cement mortar, and a special adhesive composition. The result is an almost homogeneous wall, which allows to avoid cold bridges.

The Blocks of foam are not as the same size. Permissible deviation – 5 mm. So they are placed only on the solution. The advantage of this kind of building materials – lower water absorption. But for heat and sound insulation and ease of processing of foam concrete plays concrete.