FIELD: production of concrete.
SUBSTANCE: multicomponent concrete modifier comprises, in mass %, 80-98 of dispersed mineral component, 2-20 of plasticizing admixture, and 0-10 of calcium hydroxide. The modifier is additionally comprises air-entraining admixture in amount of 0.01-1.0% of the modifier mass. The plasticizing admixture is made of salt of polycondensate of β- naphthalene sulfo acid and formaldehyde and/or salt of lignosulfonic acid and/or polycarboxylate.
EFFECT: enhanced strength of concrete.
6 cl, 3 tbl
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