FIBROSOL-CEMENT-SOIL MIXTURE Russian patent published in 2024 - IPC E01C3/04 E01C7/36 E02D3/12 C09K17/10 C04B28/04 C04B111/20 

FIELD: road construction.

SUBSTANCE: invention relates to road construction and can be used to reinforce soils when arranging layers of bases and pavements. Fibrozol-cement-soil mixture contains, wt.%: natural soil 63.0–80.0, portland cement 2.0–5.0, fibrous fibre 0.5–3.5, mineral additive 2.0–5.0, water – the rest. Mineral additive is obtained by dry electric separation of flue ash of thermal power plants and contains iron oxide not more than 0.90% by weight, calcium oxide not less than 4% by weight, aluminium oxide is not less than 23% by weight, silicon oxide is not less than 53% by weight.

EFFECT: increased ultimate strength in compression, bending and splitting, crack resistance, frost resistance and reduced water saturation of hardened soils with acidity index pH not less than 4.

5 cl, 2 tbl