RAW MATERIAL MIXTURE FOR HIGH-STRENGTH FIBRE-REINFORCED CONCRETE Russian patent published in 2015 - IPC C04B28/04 B82B1/00 C04B111/20 

FIELD: chemistry.

SUBSTANCE: raw material mixture for high-strength fibre-reinforced concrete, which includes Portland cement, quartz-fieldspar sand FM = 2.1, reinforcing component, silica-containing additive and water, as reinforcing component contains basalt fibre, obtained by centrifugal-blast method, and as silica-containing additive - nanodisperse powder of silicon dioxide Tarkosil-05, with the following component ratio, wt %: Portland cement - 23.28-27.37; quartz-fieldspar sand FM = 2.1 - 63.37-66.36; basalt fibre - 0.93-1.09; nanodisperse powder of silicon dioxide Tarkosil-05 - 0.12-0.14; water - 9.31-10.95, with application of nanodisperse powder of silicon dioxide Tarkosil-05, preliminarily subjected to processing in ultrasonic disperser together with mixing water for 10 minutes, and Portland cement together with basalt fibre is mixed in vibro-grinder for 45 seconds.

EFFECT: increase of flexural and compressive strength, corrosion stability of fibre-reinforced concrete, reduction of consumption of silica-containing component, introduced into raw material mixture to increase corrosion stability of basalt fibre.

3 tbl