METHOD OF PRODUCING COMPLEX NANO-DISPERSIVE ADDITIVE FOR CONCRETE MIXTURE Russian patent published in 2013 - IPC C04B22/06 C04B24/18 B82B3/00 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to building and industry of building materials, in particular to methods of producing complex nano-dispersive additives for concrete mixtures. In method of producing complex nano-dispersive additive for concrete mixture, obtained by ultrasonic dispersion of water suspension, obtained by mixing schungite, superplasticiser C-3 and water, first, solid phase of suspension is obtained by joined grinding of schungite and superplasticiser C-3 in form of dry substance to specific surface area 380-400 m²/kg in ball grinder, after which it is mixed with water, and dispersion of obtained suspension with concentration of solid phase 3% is performed until size of particles is 90-280 nm at ultrasound frequency 35 kHz with the following content of components, wt %: schungite - 75.0-89.3, superplasticiser C-3 - 10.7-25.

EFFECT: increase of concrete mixture mobility, increased strength, density, reduction of water absorption by concrete, acceleration of solidification of building products and constructions.

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