In this paper, the ultraviolet absorber UV531/SBS modified bitumens (UV531/SMB) were prepared by the method of melt blending. The thermal-oxidative and ultraviolet (UV) aging of UV531/SBS modified bitumen were simulated by rolling thin film oven test (RTFOT) and indoor-accelerated UV aging test respectively. The effect of UV531 on the morphology of SBS modified bitumen was investigated through fluorescent microscopy (FM). The results demonstrate that the addition of UV531 changes the dispersed state of SBS polymer in bitumen after aging, resulting in a different microstructure of UV531/SMB as compared to the SMB. The FM images suggest an improvement of thermal-oxidative and UV aging resistance of SBS modified bitumen by UV531.
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Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Peoples R ChinaWuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Peoples R China
Zhang, Canlin
Yu, Jianying
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Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Peoples R ChinaWuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Peoples R China
Yu, Jianying
Xu, Xiong
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Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Peoples R ChinaWuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Peoples R China
Xu, Xiong
Sun, Yubin
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Wuhan Univ Technol, Ctr Mat Res & Anal, Wuhan, Peoples R ChinaWuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Peoples R China