STRENGTHENED CLAY SOIL Russian patent published in 2018 - IPC E02D3/12 C04B28/08 C04B111/20 C04B111/27 

FIELD: construction.

SUBSTANCE: strengthened clay soil contains cohesive soil, a complex binder, and water in order to provide the desired humidity, steel converter slag from Lipetsk steel mill being used as the main component of the complex binder, as well as Portland cement or Portland slag cement of a strength grade not lower than M300 as a curing activator, at the following component ratio by the solid phase, wt %: said steel slag 10-69, said Portland cement or Portland slag cement 3-7, soil 28-83, and additionally - a chemical additive "Chimston" in an amount of 0.175 wt % of Portland cement or Portland slag cement weight.

EFFECT: increasing the strength, frost resistance, water resistance, reducing the time required to gain the given strength of soils.

10 tbl, 1 ex