FIELD: chemistry.
SUBSTANCE: invention relates to production of construction materials and can be used in preparing concrete and mortar. The method involves mixing cement, an aggregate, water and a superplasticiser in form of an aqueous solution. The naphthalene-formaldehyde-based superplasticiser is added together with a micro-dose of a polycarboxylate-based additive, taken in amount of 0.05-0.15% of the weight of the dry residue of the plasticising additive. The binder used can be different types and brands of portland cement, the plasticiser used is naphthalene-formaldehyde-based plasticising additives, the additive is polycarboxylate-based plasticising additives, optimum content of which is equal to 0.001 of the dry residue of plasticising additive, with allowable ratio of 0.001±0.0005.
EFFECT: high mobility of concrete mixtures, as well as strength of concrete and mortar.
6 dwg, 6 tbl, 5 ex
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