| abstract |
This invention relates to a bitumen regenerant made from a specific styrenic block copolymer, biotype oil or biotype oil blend and an antioxidant system. When measured at a shear rate of 6.8/sec, the bio-type oil or bio-oil blend has a flash point > 230 ° C and the asphalt regenerant has a maximum viscosity of 2000 cP at 180 ° C (ie £ 2000) cP). An alternate embodiment of the present invention is a pavement composition of RAP and/or RAS, asphalt regenerant, and raw asphalt with and without a crosslinking agent. Finally, the invention includes a method of making the above-described asphalt regenerant composition and blending it with RAP and fresh asphalt. An emulsion is also described and claimed that comprises an asphalt regenerant, water, and an emulsifier. |