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When choosing a brick, buyers are guided byits performance: durability, resistance to low temperatures, ability to absorb moisture, etc. Basically in the market today are presented two types of bricks - ceramic and silicate. Products differ in the way they are manufactured, the conditions of use, but according to the operating parameters given to the consumer, they coincide. To properly choose the right brick, you need to know its basic qualities.

Technical characteristics of brick

To the main characteristics of any brick inFirst of all, strength refers. In the marking, it is designated by the number (75-300), which stands after the "M". The number characterizes the resistance of the product to resistance to deformation, internal stresses. For example, M100 means: the brick can withstand a hundred-kilogram load per square inch. The second, no less important operational parameter is frost resistance. It is designated as "F" and shows how many freeze-thaw cycles it can withstand the product. Modern large factories produce bricks of the brand F35, not lower. If a product marked as F25 or even below is found, then such material is suitable for operation only in a warm climate. Another parameter is the size. The most common one-and-a-half version: 205h120h88 mm: it is convenient to take such a brick with one hand. Less common is a single type: 250x120x62 mm and double: 250x120x100 mm.

How to choose a brick

First you can ask the appropriatecertificate from the seller. However, it happens that documents will not be shown to you, and if provided, it is not a fact that they are real. It remains to try to determine at least approximately the quality of the products offered. First, look at a few bricks; if there are cracks on them, then it is better to refrain from buying: the brick was made with technology disruptions (incorrect mixture formulation, poor heat treatment, etc.). Also suspicions should cause numerous foreign impurities; if they are gray and have loose structure, then this is a sign of quicklime. When it comes into contact with water, it is possible to destroy the brick. To test the strength, take the brick worse (in appearance) and break it. Too many fragments indicate disturbances during batching, the black core - about violations during heat treatment, and the core of the mustard color indicates that the product has not been kept in the oven. When buying silicate bricks, pay attention to its geometry - the corners should be clear, straight. The product should not have cracks, chips, potholes, voids, foreign impurities. It is worth noting that the silica brick is cheaper than ceramic, but does not withstand constant contact with moisture and does not withstand high temperatures. All this must be taken into account when selecting materials for construction.