METHOD FOR THERMAL REGENERATION OF ASPHALT CONCRETE (FOUR VERSIONS) Russian patent published in 2013 - IPC C04B26/26 E01C7/18 

FIELD: chemistry.

SUBSTANCE: invention relates to road construction and specifically to a method for thermal regeneration of asphalt concrete. The method for thermal regeneration of asphalt concrete involves crushing asphalt concrete, moistening with aqueous solution of a complex organic preparation having an organic part in form of a complex of enzyme preparations in form of complex compositions obtained from culturing different microorganisms on a sugar- and fructose-containing culture medium, mixing the components, distributing the mixture and packing. The crushed asphalt concrete is first heated to temperature of 70-110°C and the moistened, with the following ratio of components, wt %: crushed asphalt concrete - 97-93, aqueous solution of complex organic preparation - 3-7, wherein the aqueous solution of the complex organic preparation is prepared with water solubility of 1:100 - 1:1000, depending on the initial concentration of the complex organic preparation, ambient temperature, duration of preparation of the asphalt mixture and the end of the packing process thereof. Versions of the method for thermal regeneration of asphalt concrete are also disclosed.

EFFECT: reduced material and energy costs when producing regenerated asphalt concrete from crushed asphalt concrete, as well as solving the environmental task by recycling asphalt concrete.

4 cl, 2 tbl