METHOD TO STRENGTHEN NATURAL SOILS AND MINERAL MATERIALS FOR CONSTRUCTION OF ROADS Russian patent published in 2014 - IPC E02D3/12 C09K17/44 

FIELD: construction.

SUBSTANCE: in the method to strengthen natural soils and mineral materials for construction of roads with using of hydraulic mineral and water-dissolved polymer binders, including cement and latex of copolymers on the basis of sterol, ethers of acrylic acid, butadiene, acrylonitrile, ethylene with vinyl acetate, vinyl chloride or their mixtures with additives of thickeners on the basis of cellulose, defoaming agents of siloxane type and ether of glycol with regulation of pH by caustic, the specified polymer binder is used, polymer particles in which have dimensions from 50 to 200 nm, preferably 80-160 nm, with an additive in the amount of 0.1-5.0 wt parts per 100 wt parts of dry substance of the specified binder as a coalescer - ether of glycol of simple mono- or diester of ethylene- or diethylene glycol or aromatic hydrocarbon, for instance, white spirit, the value pH equal to 6.5-9 is set when using caustic in the form of 1-2% solution.

EFFECT: higher strength, water resistance.

10 ex, 4 dwg