Author(s)

Ning Li, Wei Huang

Corresponding Author

Ning Li

Abstract

In the experiment, a certain proportion of recycled polyethylene wax (RPEW), crumb rubber modifier (CRM) and styrene butadiene rubber (SBR) are used to produce RPRS asphalt modifier through high temperature pyrolysis and physical mixing process. The modifier is then used to modify the matrix asphalt. Compared with the matrix asphalt, RPRS modified asphalt has better performance at high temperature. In order to verify the ultraviolet aging properties of RPRS modified asphalt, 10 kinds of asphalts (DH, IS, MM, DH3283, DH4283, IS3283, IS4283, MM3283, MM4283, SBS) are chosen and tested from the perspectives of original asphalt, ultraviolet radiation aging (UV) and rolling thin film oven test (RTFOT). Three indicators, namely Penetration, Softening Point and Ductility are adopted. The test results show that, the Penetration of RPRS modified asphalt is attenuated; the Softening Point of RPRS modified asphalt changes little; the Ductility of RPRS modified asphalt decreases limitedly.

Keywords

RPRS modified asphalt, Ultraviolet aging, Performance research.