SHRINKPROOF COMPOUND FOR CONCRETE MIX Russian patent published in 2022 - IPC C04B18/14 C04B28/04 C04B28/08 C04B111/34 

FIELD: building materials.

SUBSTANCE: invention relates to the production of building materials and can be used in the manufacture of various grades of heavy concrete, as well as in the manufacture of concrete, reinforced concrete products and monolithic concrete. The shrinkproof compound for the concrete mixture contains, wt. %: blast-furnace granular slag with a particle size of not more than 0.08 mm, where the ratio of the mass of CaO contained in the blast-furnace granular slag to the mass of SiO₂ is in the range of 0.9-1.1, 60-70, steel-smelting slag with a particle size of no more than 0.08 mm, where the ratio of the mass contained in the steel-smelting slag CaO to the mass of SiO₂ is in the range of 2.5-6, 30-40.

EFFECT: development of a shrinkproof compound that makes it possible to replace 10-20 wt. % of cement in the concrete mix, as well as reducing the shrinkage of concrete while maintaining its strength indicators.

1 cl, 1 tbl, 1 ex