FIELD: chemistry.
SUBSTANCE: invention relates to use of cationic polymers, specifically to a method of neutralising clay in sand. The method neutralising clay in sand, designed to obtain hydraulic compositions, comprises steps for adding a cationic polymer into the compositon or into one of its components. The said cationic polymer has cation charge density of over 0.5 meV/g, and characteristic viscosity less than 1 dl/g.
EFFECT: use in accordance with the invention enables efficient neutralisation of clay in hydraulic compositions.
24 cl, 4 tbl, 24 ex
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