FIELD: construction.
SUBSTANCE: invention can be used for production of complex additions to cement solutions and concretes during manufacture of construction products and constructions during monolithic construction. In method intended for obtaining complex addition to mixture for cement concrete or solution by grinding silica-containing component and superplasticising agent C-3 there used as silica-containing component is technogenic glauconitic sand; grinding is performed during 1.5 h till specific surface area is 200-250 m2/kg, with further additional introduction of hardener-calcium nitrate and re-grinding during 1.5 h till specific surface area is 300-400 m2/kg at the following component ratio, wt %: technogenic glauconitic sand 80-84, superplasticising agent C-3 8-10, calcium nitrate 8-10.
EFFECT: increasing movability of concrete mix, durability during compression and bending during the first day and later hardening periods without decrease of durability, decreasing water absorption and cement consumption.
4 cl, 3 tbl
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