FIELD: chemistry.
SUBSTANCE: invention relates to construction materials, and more specifically to complex additive compositions, used in making concrete, mortar, reinforced concrete and special concrete objects. The complex additive contains a mixture of ballast salts from desulphurisation of coke gas based on sodium thiocyanate and thiosulphate, superplasticiser C-3, mixture of sodium salts of acrylic acid oligomers and salts of acrylic acid esters with the following ratio of components (pts.wt): mixture of ballast salts from desulphurisation of coke gas based on sodium thiocyanate and thiosulphate - 15 to 40; superplasticiser C-3 - 10 to 40; mixture of sodium salts of acrylic acid oligomers and acrylic acid esters - the rest.
EFFECT: improved degree of water impermeability of concrete and faster strength gain, as well as reduced consumption of additive.
1 tbl, 4 ex
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