FIELD: chemistry.
SUBSTANCE: invention is aimed at production of self-compacting straining mixtures used for production of waterproof structures, including thick-packaged, complex geometrical shape and structures of large length. Complex expansion additive for self-compacting concrete mixture has the following composition, wt. %: blast-furnace granulated slag - 17–30; alumina slag - 2–8; gypsum - 4–10; microsilica - 0–1.7; iron ore wet enrichment wastes - 0.5–1.6; finely ground mineral component with specific surface area of not less than 6000 cm2/g - 55–67; superplasticizer based on modified polyether carboxylate 1–4.
EFFECT: technical result is production of self-compacting concrete with improved physical and mechanical properties.
1 cl, 3 tbl
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