COMPLEX ADDITIVE FOR CEMENT SYSTEMS (VERSIONS) Russian patent published in 2014 - IPC C04B24/20 C04B103/30 

FIELD: chemistry.

SUBSTANCE: invention relates to field of construction materials, in particular to compositions of complex additive, applied in production of concretes, mortars, concrete and reinforced concrete products. Complex additive for cement systems, containing superplasticiser, and mixture of electrolytes, additionally contains organic viscosity regulator; as viscosity regulator used are non-ionogenic and ionogenic cellulose ethers, modified starches, polysaccharides of vegetable or microbiological origin, binary mixtures of monomer cationic and anionic surface-active substances or mixture of several said components with the following content of said components, wt %: superplasticiser 51-84, mixture of electrolytes 15-45, organic viscosity regulator 1-4. In accordance with another version complex additive for cement systems, contains, wt %: superplasticiser 1-10, mixture of electrolytes 1.5-4.5, organic viscosity regulator 0.05-0.5, water-retaining component 85.45-97.45, as water-retaining component it contains mixture of several finely milled natural minerals from the group: limestone, dolomite, sand and/or mixture of several technogenic finely disperse materials of the group, including fly ash, blast furnace slag, microsilica, metakaolin.

EFFECT: reduction of values of apparent viscosity to minimal ones with preservation of threshold values of shear stress.

3 cl, 1 dwg, 2 tbl, 18 ex