Which brick to use in laying the foundation

The main building material required for laying the foundation is brick. It’s not easy to figure out which brick is better for making the foundation. Modern manufacturers of this type of building ceramics have flooded the market with many different varieties of building and finishing bricks.

What should be the brick


Of all the variety of grades and brands of bricks on the market, for underground work it is best to use solid, earthen, red, well-burnt bricks. This brand of brick has a high degree of resistance to compression, it is much better than other brands to resist moisture (does not accumulate and does not absorb it).

Recommended brick marks


The foundation, made of such a brick, will correspond to the initial technical characteristics much longer and will be able to do without repair for a longer time.Recommended brands for use: M-300, M-250, M-200, M-175 and M-150. Frost resistance index should not be below 35 and the level of water absorption should be from 6% to 16%. Of course, the lower the level of water absorption, the better, but one should take into account the fact that a brick with a low hygroscopicity index is significantly more expensive.

What you need to know


White silicate brick in its strength characteristics is better than red brick, but due to poor moisture resistance, it is not suitable for underground laying, it can be used for facing the foundation, especially since such building material has a very presentable appearance.
The only type of brick that can adequately replace red brick in underground work is clinker brick made from special grades of clay. Such building material is much stronger and able to resist moisture. However, the high cost makes its use in the creation of foundations impractical.
Clinker bricks belong to the facing marks and are used, as a rule, in the process of facing works on the facades of buildings. It is strictly not recommended to use any brand of hollow brick for underground laying.It perfectly absorbs moisture, is not able to withstand bending and compression loads. It is also not recommended to build a foundation using any grades of silicate brick, which very poorly resist temperature changes and are easily destroyed by the action of water, which is not surprising, given the fact that silicate brick is, in fact, pressed sand.

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