FIELD: chemistry.
SUBSTANCE: invention relates to modified concrete mixtures with special properties. The concrete mixture contains cement, aggregate, modifier and water. The mixture also contains polyhydrosiloxane and ground rock. The cement used is portland cement, the modifier is microsilica and/or flue ash and plasticising agent, and the ground rock is ground quartz sand or ground limestone or ground volcanic rock, with the following ratio of components, wt %: cement 7-20; aggregate 60-85; modifier 0.01-5.50; polyethylhydrosiloxane 0.002-0.010; ground rock 2-15; water - the rest. The ground rock has particle size of not more than 1300 mcm.
EFFECT: higher concrete strength.
2 cl, 2 tbl
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