MIXTURE FOR PRODUCTION OF FINE-GRAINED CONCRETE OF INCREASED THERMAL STABILITY Russian patent published in 2025 - IPC C04B28/04 C04B103/32 C04B14/06 

FIELD: construction materials.

SUBSTANCE: invention relates to the industry of construction materials and can be used in making concrete and reinforced concrete articles used at facilities where said articles can be exposed to hot water or steam. Mixture for production of fine-grained concrete of increased thermal stability contains portland cement, screenings from crushing quartzite sandstone with particle size of 0-5 mm and additionally contains fine-dispersed granular blast-furnace slag with specific surface area of 3800 cm²/g and basicity module M_b=1.07, as well as polycarboxylate superplasticizer Polyplast PK type S and water in following ratio of components, wt.%: portland cement 22.31; said quartzite sandstone crushing screenings 63.06; said finely dispersed blast-furnace granulated slag 5.57; said superplasticiser 0.14; water 8.92.

EFFECT: invention is aimed at increasing the thermal stability of fine-grained concretes exposed, in addition to mechanical, to thermal (30-95 °C) and hydraulic load (humidity 90-100%).

1 cl, 1 dwg, 1 ex