COMPOSITION FOR STRENGTHENING THE SOIL Russian patent published in 2022 - IPC E02D3/12 E01C3/04 E01C7/36 C04B28/08 C04B28/28 C04B111/20 

FIELD: construction.

SUBSTANCE: invention relates to construction and can be used for the construction of reinforced road foundations. The soil strengthening composition contains, wt %: soil represented by loam or sandy loam, 20.5-72.5, binder 18.0-68.0, complex chemical additive 1.2-2.5, water 8.3- 9.0. The binder contains, wt.%: granulated blast-furnace slag of fraction 0.16-2.5 mm 18.0-28.0, slag of out-of-furnace processing of steel of fraction 0.16-0.63 mm 70.0-79.0, reaction- active filler 2.0-3.0, while the reactive filler consists of (wt.%): polycarboxylate based on a copolymer of methacrylic acid 48.0-52.0 and potassium nitrite KNO₂ 48.0-52.0. A complex chemical additive is an aqueous solution with a density ρ = 1.025 - 1.045 g/cm³ and a pH value of pH = 6.3 - 6.7, containing, wt.%: polycarboxylate copolymer based on maleic anhydride 25.0-27, 0, sodium gluconate 5.5-6.0, nanodispersions of silicon hydroxide, represented by a colloidal solution with a density ρ = 1.015 - 1.030 g/cm³ and a pH value of pH = 3.8 - 4.2, 2.5-3.0, water 65.0-66.0.

EFFECT: increase in compressive strength, tensile strength in bending and increase in frost resistance of the reinforced soil.

1 cl, 2 tbl, 1 ex