FIELD: construction.
SUBSTANCE: construction of underground concrete and reinforced concrete structures. Complex additive to the concrete mixture contains nitrogen-containing catalyst production waste and polycarboxylate superplasticizer ST 5.0 in the following ratio, in % by weight: nitrate-nitrite-alkaline water 60.0-65.0; superplasticizer ST 5.0 35.0-40.0.
EFFECT: increasing the strength of concrete in the initial stages of its hardening and water resistance when gaining design strength.
1 cl, 1 tbl
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