SPECIAL CONCRETE Russian patent published in 2020 - IPC C04B28/04 C04B18/14 C04B24/26 C04B40/00 C04B111/27 

Abstract RU 2720839 C1

FIELD: construction.

SUBSTANCE: invention relates to construction, in particular to compositions of waterproof and wear-resistant concrete, and can be used for concreting hydraulic structures. Special concrete contains Portland cement CEM I 32.5H, mineral additive, chemical modifier, sea sand of fraction up to 2.5 mm, crushed stone or gravel of fraction up to 150 mm and water as mineral additive with specific surface area of 800 m2/kg, granulated blast-furnace slag or electro-thermophosphorous slag is used, and the chemical modifier is a polyacrylate-based hyper plasticiser – HIDETAL-P-8, with the following ratio, wt%: Portland cement CEM I 32.5H 14–16.3; granular blast-furnace slag or electro-thermophosphorous slag 3–4.4; sea sand of fraction from 2.0 to 2.5 mm 36–39; crushed stone or gravel with particle size from 70 to 150 mm 29–31; polyacrylate-based hyper plasticiser 0.5–1.0; water – balance.

EFFECT: high water-resistance, corrosion resistance and wear resistance of hydraulic structures, as well as low cost of end products with simultaneous improvement of environmental situation due to use of man-made wastes in concrete.

1 cl, 2 tbl

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RU 2 720 839 C1

Authors

Fedyuk Roman Sergeevich

Popov Egor Aleksandrovich

Baranov Andrej Vyacheslavovich

Lisejtsev Yurij Leonidovich

Lesovik Valerij Stanislavovich

Dates

2020-05-13Published

2019-08-08Filed