NANOMODIFIED CONCRETE AND PREPARATION METHOD THEREOF Russian patent published in 2011 - IPC C04B28/04 C04B40/00 B82B3/00 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to construction materials and can be used to make articles from nanomodified concrete in civil and industrial construction. The nanomodified concrete contains portland cement, glauconitic sand, superplasticiser C-3 and water, and the nanomodifying additive is silica sol obtained by titrating citric acid with a mother solution, with the following ratio of components in wt %: portland cement 18.65-22.93; glauconitic sand 74.53-68.8; said additive 0.005-0.02; superplasticiser C-3 0.18-0.23; water - the rest. Method of producing nanomodified concrete involves mixing portland cement, glauconitic sand and 2/3 water, followed by addition of superplasticiser C-3, mixed with the remaining amount of water and said additive.

EFFECT: high ultimate compression strength and reduced water absorption of concrete.

2 cl, 2 tbl, 1 ex