COLD METHOD FOR OBTAINING ASPHALT CONCRETE OF INCREASED STRENGTH FOR REPAIR AND CONSTRUCTION OF AUTOMOBILE ROADS Russian patent published in 2015 - IPC E01C19/10 C04B26/26 C04B111/20 C04B111/27 

FIELD: construction.

SUBSTANCE: in a cold method for obtaining asphalt concrete of increased strength for repair and construction of road pavements using mineral material in the form of crushed stone, sand by their being mixed with cement and bituminous emulsion, with further application of the obtained asphalt-concrete mix onto the road base and its compaction, mixing is performed at addition to the above said cold mineral material for 100 of its wt % subsequently in 40-90 seconds of the next components, wt %: cement - 3.0-6.0, nanocomposite additive with particle size of 50-300 nm, mainly 80-160 nm, which contains the following, parts by weight: active silicic acid 0.01-3 and latex based on styrene, ester of acrylic acid, butadiene, acrylonitrile, acrylic or methacrylic acid, their mixtures 1 (in terms of a dry substance) 0.075-0.25, cationic bituminous emulsion (in terms of bitumen) 2.0-5.0.

EFFECT: saving of energy resources and improving strength of asphalt concrete.

4 tbl, 5 ex, 4 dwg