METHOD OF CONCRETE MIX PRODUCTION Russian patent published in 2009 - IPC C04B40/00 B28C5/00 

FIELD: construction.

SUBSTANCE: invention relates to construction materials. The method of concrete mix production includes mixing Portland cement, super softener C-3, micro-silica, fine-grained filling agent such as sand for construction works and coarse-grained filling agent of 5-20 mm fractions. Crushed stone of mainly cubic shape or gravel of mainly round shape is used as the above coarse-grained filling agent. The mixing process is performed at the following order of components supply to mixer: the above-mentioned coarse-grained filling agent, tempering water, super softener C-3 and microsilica. The mixture is stirred during 2-10 minutes and Portland cement and construction sand are introduced. Then mixture is stirred during 3 minutes under the following ratio of components, wt %: Portland cement - 11-17.6, coarse-grained filling agent - 52.8-54.1, super softener C-3 - 0.09-0.13, microsilica - 1.1-1.76, construction sand - 21.37-28.55, water is the remaining ingredient.

EFFECT: reduction of power consumption and labour efforts, simplification of technology at high concrete strength properties.

1 tbl, 1 ex