METHOD OF PREPACKED CONCRETING Russian patent published in 2018 - IPC B28B5/00 C04B14/02 C04B28/02 

FIELD: construction.

SUBSTANCE: invention relates to construction, namely to technology of preparing concrete mixtures and articles therefrom, and can be used in monolithic construction. Method of separate concreting includes the installation of formwork, laying of a large aggregate and introduction of a cement suspension. In this case, a large aggregate of fractions of 20–40 mm and 10–20 mm in a ratio of 30:70 is used. Introduction of a self-compacting cement suspension containing ground quartz sand of the fraction 0.16–0.63 mm, are carried out after mechanochemical activation in a rotary pulsation device with a speed of the working organ of 5,000 rpm for 2–3 min with the calculated amount of mixing water and a superplasticizing additive Melflux 5581 F in an amount of 0.5 % of the weight of the cement. And the ratio of cement and ground quartz sand of the fraction 0.16–0.63 mm in the cement suspension is 1:1.

EFFECT: technical result is increased density and strength of concrete, increased frost and water resistance.

1 cl, 1 tbl