Effect of phenolic resin on the rheological, chemical, and aging properties of SBR-modified asphalt

Abstract

In this study, the effects of phenolic resin (PF) on the permanent deformation and short-term aging resistance of SBR-modified asphalt binder were investigated. Multiple stress creep recovery (MSCR) tests, Fourier transform infrared spectroscopy (FTIR), and gel permeation chromatography (GPC) were performed to investigate the effect of PF on the deformation resistance and aging resistance of SBR-modified asphalt with PF (S4P3). The results show that PF can significantly improve the permanent deformation resistance and aging resistance of the asphalt binder. In addition, S4P3 showed different molecular weight changes during the aging process, and the percentage of large molecular size (LMS) in asphalt has a significant impact on the deformation recovery ability and temperature sensitivity of asphalt.