FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing concrete mixture with plasticiser additives and can be used in precast reinforced concrete and in monolithic construction. In the method of preparing concrete mixture, involving pre-activation of part of the calculated amount of cement with a superplasticiser and subsequent mixture with the remaining part of the cement, filler and water, activation is done by stirring in aqueous medium with water-to-cement ratio of 0.5 to 1.0 for 40 to 45 minutes. The cement part makes up 10% of the calculated amount, and the superplasticiser is taken in amount of 1% of this part of cement in terms of dry substance.
EFFECT: increased strength, reduced consumption of plasticiser.
5 ex, 1 tbl
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