SPECIAL CONCRETE FOR PROTECTING STRUCTURES OF PROTECTIVE STRUCTURES Russian patent published in 2019 - IPC C04B28/04 C04B14/06 C04B14/14 G21F1/00 C04B111/20 

FIELD: construction.

SUBSTANCE: invention relates to construction, in particular to compositions of concrete mixtures, and can be used for erection enclosing structures of protective structures. Special concrete obtained from a mixture containing portland cement, aggregate, plasticising additive, organo-mineral nanomodifier and water. Organo-mineral nanomodifier is obtained by co-grinding to specific surface area of 550 m²/kg of mixture of portland cement, quartz flour and amorphous silicon dioxide, with content of said components of 30, 40 and 30 wt%, respectively. Before preparing the concrete, the organo-mineral nanomodifier is mixed with portland cement and the mixture is subjected to milling to specific surface area of 600 m²/kg, wherein the plasticizing additive used is a polycarboxylate hyperplasticiser, and the aggregate used is basalt crushed stone of 5–20 mm and 20–40 mm fraction and quartz sand, with the following ingredients content, kg per m³ concrete: portland cement – 300; organo-mineral nanomodifier – 21–36; basalt crushed stone of 20–40 mm fraction – 441–491; basalt rubble with particle size of 5–20 mm – 568–618; quartz sand 657–687; polycarboxylate hyperplasticiser –3.9–4.3; water – 170.

EFFECT: improving strength and radiation-protective characteristics of concrete structures, reducing gas and water permeability, as well as reducing the cost of the end product.

1 cl, 3 tbl