FIELD: concrete additives.
SUBSTANCE: invention relates to additives for concrete, in particular, to a polycarboxylate superplasticizer with high adsorption and resistance to clay, and a method for its production. The polycarboxylate superplasticizer is prepared from a modified polyester macromonomer, an unsaturated acid, a cationic quaternary ammonium monomer, a phosphonate monomer, an unsaturated sulfonic acid group, an initiator, a chain transfer agent and a neutralizing agent.
EFFECT: polycarboxylate superplasticizer presented in this document has good adsorption and dispersing properties and the required resistance to clay, thus it can effectively increase adsorption on cement particles and reduce the effect of clay content in sand and gravel on adsorption and dispersion, helping to improve concrete properties.
9 cl, 3 tbl
| Title | Year | Author | Number |
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RU2741290C2 |
