DRY CONSTRUCTION MIXTURE FOR STRENGTHENING AND STABILIZATION OF SOIL Russian patent published in 2020 - IPC E02D3/12 C04B28/04 C04B111/20 

FIELD: road construction.

SUBSTANCE: invention can be used for reinforcement and stabilization of soils during creation of unpaved highways, during regeneration of lower (1–4 categories of roads) and upper layers (5-category) of asphalt concrete during reconstruction and repair of road clothes during cold regeneration and reinforcement of layers, made from asphalt-granulate, crushed stone or sand-gravel mixes. Dry construction mixture for strengthening and stabilization of soil includes, wt %: melanin 0.01–0.5, wollastonite 0.5–3.0, brown-coal fly ash 1.0–8.0, sodium oleate 0.01–0.5, superplasticizer C3 2.0–5.0, sodium citrate 0.01–0.1, technical lignosulphonate LST 0.1–1.0, dolomite flour 0.5–3.0, slaked lime 1.0–3.0 , active microsilica 0.01–0.1, sodium fluoride 0.01–0.1, sulphates of copper, ammonium, iron 0.02–0.5, fiber 3.0–7.0, cement—rest.

EFFECT: technical result is high strength, frost resistance, reduced water saturation and swelling of soil.

1 cl, 4 tbl