FIELD: manufacture of building materials; oil producing industry.
SUBSTANCE: proposed additive contains commercial lignosulfonates, foam suppressor, superplasticizing agent on base of naphthalene or melamine sulfonic acid, calcium nitrate, biocide and potassium hydroxide at required ratio of components.
EFFECT: enhanced corrosion resistance and strength at early hardening periods.
3 cl, 2 tbl, 1 ex
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