FIELD: chemistry.
SUBSTANCE: invention relates to composition for plasticising and water-reducing additive to concrete and mortar. Plasticising and water-reducing additive to concrete and mortar includes technical lignosulfonate and hydrophobisator in form of water-compatible emulsions of polyalkylsiloxanes with molecular weight 1-20 kDa and alkyl radicals C1-C5, sodium thiosulfate and thiocyanate mixture, resorcinol, pyrocatechol and hydroquinone mixture with ratio (0.35-0.58):(6.32-8.39):(0.5-0.9), sodium carbonate and water with the following component ratio, wt %: lignosulfonate 42.8-57.9, hydrophobisator 0.1-1.0, sodium thiosulfate and thiocyanate mixture12.92-16.44, resorcinol, pyrocatechol and hydroquinone mixture 6.34-8.9, sodium carbonate 16.6-25.5 and water - the remaining part. Invention is developed in dependent claim of invention formula.
EFFECT: increased diluting ability of initial technical lignosulfonates in additive composition to the level of superplasticisers with simultaneous increase of its permissible dosage in cement systems, as well as increased water and frost resistance.
2 cl, 2 tbl
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