METHOD TO TREAT ASPHALT-CONCRETE ROAD SURFACES Russian patent published in 2014 - IPC E01C7/35 C08L95/00 

FIELD: construction.

SUBSTANCE: method to treat asphalt-concrete road surfaces with an organic solution of a composition of modified bitumen binder, in which treatment is carried out by impregnation of the upper layer of the asphalt-concrete coating with an impregnation composition, such as a composition of a modified bitumen binder containing 30-85 wt % of oil bitumen, 15-20 wt % of oil polymer resin and possibly 0-40 wt % of mineral oil and 0-5 wt % of surfactants, which is used as a solution in an organic dissolvent, having boiling temperature of 155-200°C, used at its weight ratio to the modified bitumen binder, equal to 70/30-50/50, at the same time application of the solution of the modified bitumen binder onto the asphalt-concrete coating is carried out by method of pouring with the norm of consumption of the solution of 0.1-0.4 l/m² and at the temperature of -6-(+40°C).

EFFECT: low water saturation of treated asphalt-concrete coatings, reduced ageing of coatings, increased coefficient of wheel adhesion to a coating.

6 cl, 3 tbl, 5 ex