FIELD: construction.
SUBSTANCE: invention relates to construction materials industry, in particular to the production of fine-grained concrete. Raw material mixture for making fine-grained concrete contains, mast: Portland cement 24–26, quartz sand 74–76, water-retaining additive – soaked before swelling in 3 % aqueous solution of hydrogen peroxide and ground gelatinous gelatin 0.1–1.0, water 12–14.
EFFECT: higher strength of fine-grained concrete.
1 cl, 1 tbl
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