WATERPROOFING COMPOUND FOR PROTECTION AND RESTORATION OF CONCRETE STRUCTURES Russian patent published in 2020 - IPC C04B41/63 C04B41/65 C04B28/04 C04B28/06 C04B111/27 C04B111/72 

FIELD: construction.

SUBSTANCE: waterproofing composition for protection and restoration of concrete structures contains two main components, functionally integrated into a single unit, the first component includes a mixture of dry ingredients, second component includes a mixture of liquid ingredients, the first and second components are contained in a weight ratio of 3:1 respectively. First component contains, wt %: portland cement grade 500 DON 20–30; aluminous cement 10–20; quartz sand PB-150 55–65; polymer Mecellose FMC-2070 0.1–0.3; powdered defoaming agent Vinapor 9010F 0.2–0.5; sodium oleate 0.4–0.8; reinforcing fiber Panacea 0.3–0.8. Second component contains, wt %: styrene-acrylic copolymer ENCOR 5100, 5120 with concentration of 59–61 % on dry residue 90–98; biocide ROCIMA 622 0.1–0.5; defoaming agent FOAMASTER NXZ 0.4–0.8; dispersant Reotan LRC 0.1–0.5; water—balance.

EFFECT: technical result is high adhesion strength of waterproofing composition with concrete base, water impermeability, crack resistance and corrosion resistance of concrete and reinforced concrete structures to liquid and gaseous aggressive media, including those used in marine environment, high frost resistance of protected structures and, as a result, higher durability of structures.

1 cl, 4 ex