FIELD: chemistry.
SUBSTANCE: invention relates to a complex additive for concrete mixture and can be used in construction when producing concrete and reinforced concrete articles and structures. The complex additive for concrete mixture contains a hyperplasticiser - Odolit-K, and a curing agent - sodium sulphate, with the following ratio of components in wt %: hyperplasticiser Odolit-K 30-38, sodium sulphate curing agent - 62-70.
EFFECT: high rate of increase in strength during early hardening stages with retention of high ultimate strength, high frost resistance and watertightness.
1 tbl
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