FIELD: chemistry.
SUBSTANCE: invention relates to recycling of technogenic waste product - microsilica- with obtaining active additive to concrete, mortar and dry building mixes. In order to prepare additive, first microsilica is loaded, then mixing of microsilica starts, with feeding it with dispersed water or solution of chemical additive until granules are obtained, then feeding water or chemical additive stops, microsilica is added and mixing continues until wet granules are covered with layer of dry microsilica. Ratio of additive components is the following, mass%: water - 10-20, chemical additive - 0-15, microsilica - the remaining part.
EFFECT: reducing power expenditure on production of additive to concrete, mortar and dry building mixes.
2 cl, 1 tbl, 1 ex
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