FIELD: construction.
SUBSTANCE: invention relates to production of construction materials and compositions of crude mixtures for making bricks, which can be used to build low-rise buildings. Crude mixture for making brick contains, wt%: quartz sand 48.3-58.9; Portland cement 20.0-25.0; lignosulphonate 0.1-0.2; water 20.0-25.0; synthetic fibre with length of 2-20 mm is 1.0-1.5.
EFFECT: technical result is increased strength of brick.
1 cl, 1 tbl
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