Asphalt composition, particularly for obtaining asphalt road...

Details Asphalt composition, particularly for obtaining asphalt road... Asphalt composition, particularly for obtaining asphalt road...

C - Chemistry, Metallurgy

08

L

6/160

C08L 95/00 (2006.01) C10C 3/02 (2006.01)

Patent

CA 1052057

ABSTRACT OF THE DISCLOSURE Asphalt composition suitable for road surfaces comprising an asphaltic basis material and a modifier, the modifier comprising from 1 - 50% by weight of rubber thermal degradation products in a medium chosen from petroleum asphalts, mineral oil selective refining residues, kerosene heavy residues, or coal tar oil residues, the degradation of the rubber being effected by heating it at a temperature of from 240 - 380°C in the chosen medium. These modified asphalts in addition to exhibiting the known good tyre adhesion and load resistance of rubberized asphalts, also exhibit better thermoplastic characteristics and improved adhesion to the substrate on which it is laid, for example road bed aggregate.

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