FINE-GRAINED CONCRETE MIXTURE AND PREPARATION METHOD THEREOF Russian patent published in 2013 - IPC C04B28/02 C04B24/24 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to production of construction materials, particularly a fine-grained concrete mixture and a preparation method thereof, and can be used to make concrete structures, both monolithic and assembled, that used in the industry of construction materials and construction. In the method of preparing a fine-grained concrete mixture, which involves pre-modification of the surface of an aggregate, followed by mixing said aggregate with cement and water, the modifier used is alkyldimethylbenzylammonium chloride in amount of 0.1% of the mass of cement, and the aggregate used in ratio of 1:1 is a mixture of quartz sand with fineness modulus of 1.9 and screenings from grinding rocks from the Argun deposit with grain size of 5-10 mm, with the following ratio of components, wt %: cement - 19-25, aggregate - 68-75, water 6-7. The disclosed fine-grained concrete mixture is prepared using said method.

EFFECT: obtaining a fine-grained concrete mixture with improved physical-mechanical and operational properties based on an aggregate made from local material.

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