HEAT-INSULATING STRUCTURAL CONCRETE Russian patent published in 2019 - IPC C04B28/04 C04B24/26 C04B18/06 C04B14/38 C04B111/20 

FIELD: construction.

SUBSTANCE: invention relates to construction materials and can be used in civil, industrial, road and special construction. Heat-insulating structural concrete made from concrete mixture, consists of portland cement PC700-B (CEM 1.62.5 B), microspheres of 0–500 mcm fraction, microspheres of 0–50 mcm fraction, polycarboxylate hyperplasticizer "Melflux 2651F", crushed-ash slag screenings of 0–10 mcm fraction, fiber with diameter of 10 mcm and length 500 mcm, with the following ratio of components, wt%: Portland cement PC700-B (CEM 1.62.5 B) – 18…21, microspheres 0–500 mcm – 50…58, microspheres 0–50 mcm – 5…12, hyperplasticizer 0.15…0.2, crushed-stone ash-slag screenings of 0–10 mcm fraction – 1.5…1.7, basalt fiber glass 10×500 mcm – 0.8…0.85, water – balance.

EFFECT: obtaining concrete with coefficient of heat conductivity λ≤0,14 W/m*K and compression strength R_comp≥12,5 MPa.

1 cl, 1 tbl, 1 dwg