CRUDE MIXTURE FOR HIGH-STRENGTH CONCRETE WITH NANODISPERSED ADDITIVE Russian patent published in 2013 - IPC C04B38/00 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of structural materials and can be used to make concrete articles in civil and industrial construction, including using nanotechnology. The crude mixture for high-strength concrete with a nanodispersed additive, which contains portland cement, quartz-feldspathic sand with fineness modulus of 2.1, granite screenings with particle size of 2.5-5 mm, an additive and water; the additive is nanodispersed silicon dioxide powder Tarcosil-05, which is subjected to ultrasonic pretreatment together with hardening water in an ultrasonic disperser UZDN-A for 10 minutes, with the following ratio of components, wt %: portland cement 25-25.6, quartz-feldspathic sand with fineness modulus of 2.1 32.5-33, granite screenings with particle size of 2.5-5 mm 32.5-33, nanodispersed silicon dioxide powder Tarcosil-05 0.013-0.052, water 8.348-9.987.

EFFECT: high mobility of the concrete mixture owing to addition of a modifier additive, low consumption of the modifier, improved strength properties, including at during initial hardening stages, and low water absorption of the concrete.

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