METHOD FOR WINTER CONCRETING OF BUILDING STRUCTURES Russian patent published in 2021 - IPC C04B40/02 C04B111/20 C04B103/32 C04B14/36 C04B28/00 

FIELD: construction industry.

SUBSTANCE: invention relates to the field of the construction industry and can be used in the production of reinforced concrete and concrete monolithic structures of buildings and structures at an accelerated rate of their erection and performance of work at negative temperatures. The method for winter concreting of building structures consists in adding the ground conductive mineral shungite to the building mixture-concrete of class B30 and exposing them to an electric field created by passing a direct electric current through the building mixture by connecting electrodes. At the same time, the building mixture additionally contains a plasticizing additive-an aqueous solution of polycarboxylate ether "Glenium Ace 430", the content of which is 0.5-1% by weight of the Portland cement building mixture, and the mineral component of metakaolin, the content of which is 5-10% by weight of the Portland cement. At the same time, the content of the ground conductive mineral shungite is 1-10% by weight of Portland cement, the hydraulic activity of metakaolin is not less than 1200 mg / g, the degree of grinding of shungite is 200-400 m²/kg.

EFFECT: invention is aimed at increasing the rate of concrete strength gain at subzero temperatures, increasing the final strength of concrete, reducing shrinkage deformations of building structures.

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