FIELD: chemistry.
SUBSTANCE: invention relates to construction materials and specifically to making concrete, reinforced concrete and mortars. The construction mixture contains portland slag cement, aggregate, a complex additive and a structured liquid. The active crystallisation centres used are sand particles ground to fineness of 320 m2/kg, said sand having the following composition in wt %: SiO2 25.0-44.0; Al2O3 6.0-13; CaO 8.5-16.0; FeO 9.0-19.5; MgO 3.5-8.0; MnO 0.2-0.7; P2O5 0.1-0,6; SO3 0.5-4.5; R2O 1.2-2.5; other additives 6.0-10.0, and Relamix Type 2 is used as an additive. The method of preparing a construction mixture involves tempering, putting into a mould and compacting. The mixture is held for 2-3 hours in the mould and then further treated with structured liquid and hardened.
EFFECT: increased strength and frost resistance.
2 cl, 2 tbl, 4 ex
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