WINTER CONCRETING METHOD Russian patent published in 2020 - IPC C04B40/02 C04B111/20 C04B103/32 C04B14/36 C04B28/00 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction industry and can be used in production of reinforced concrete and concrete monolithic structures of buildings and structures with accelerated rates of their erection and performance of works at negative temperatures. Method of winter concreting consists in adding particles to the building mixture and exposing them to a field. Construction mixture additionally contains a superplasticizer "BEST-SPL" based on polymethylene naphthalene sulphonate oligomers with alkyl hydrophobic substitutes in the side chain and non-ionogenic surface-active components. Particles used are schungite ground conductive mineral. Particles are exposed to an electric field created by direct current passing through the construction mixture by connecting the electrodes. Content of the superplasticizer "BEST-SPL" makes 1–1.5 % of the weight of the binder, the content of the current-conducting shungite is 1–10 % of the weight of the binder. Degree of grinding of schungite – 200–400 m²/kg.

EFFECT: increased rates of concrete strength gathering at negative temperatures, increased final strength of concrete.

1 cl