Patent ID: 9611592
Date: 2017-04-04
CPC Classifications: C09D,E01C

Claim:
1. A drainage asphalt composite paving method, which can be used to form an impermeable intermediate layer and a drainage surface layer with a single paving process, the method comprising: (1) laying a non-solidifying rubberized asphalt composition to a thickness of 2 to 8 mm on the surface of a surface-cut asphalt, cement concrete or base layer; (2) applying sand on the non-solidifying rubberized asphalt composition laid in the step (1); and (3) laying a mixture for drainage surface layer on the sand applied in the step (2) and performing a tamping, wherein the non-solidifying rubberized asphalt composition comprises 80 to 90 wt. % of asphalt having a penetrability of 60 to 80, 5 to 15 wt. % of a modifier, 3 to 10 wt. % of a process oil, 0.5 to 4 wt. % of a strength reinforcing agent, 0.1 to 1 wt. % of an additive, 0.1 to 1 wt. % of an antioxidant, and 0.1 to 0.5 wt. % of an interlayer adherence promoter, and has a viscosity of 3,000 to 100 cP at temperature of 130 to 170° C., and wherein the tamping process of the step (3) allows the non-solidifying rubberized asphalt composition to penetrate into the drainage surface layer and form the impermeable drainage intermediate layer.