FIELD: chemistry.
SUBSTANCE: invention refers to the construction materials and can be used as additive - superplasticiser in production of cement concrete mixes used for production of building units and constructions. The complex additive for cement concretes contains (wt % on dry basis): superplasticiser based on sulfonated melamine formaldehyde resins - 1-10, superplasticiser C-3 - the rest.
EFFECT: enhancing of cement concretes compression strength.
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