山东理工大学学报（自然科学版）2026，Vol.40Issue(1)：52-57,6.
热-光-水耦合条件下SBS改性沥青老化性能与机理研究
Study on the aging performance and mechanism of SBS modified asphalt under thermal-ultraviolet-humidity coupled conditions
摘要
Abstract
SBS modified asphalt undergoes aging due to the combined influence of thermal oxidation,ul-traviolet radiation,and humidity during use.To evaluate the aging performance of SBS modified asphalt under various conditions,aging scenarios incorporating thermal oxidation,ultraviolet and humidity factors were established based on the recent climate characteristics of Guangzhou,Xi'an,and Lhasa.Infrared spectroscopy and fluorescence microscopy experiments were conducted to reveal the aging mechanism of SBS modified asphalt under these coupled aging conditions.The results show that after aging,the ductility of asphalt decreases by approximately 25%to 77%,and the softening point reduces by about 15%to 24%.Correlation analysis reveals that ultraviolet radiation has the strongest correlation with the aging process.However,under moderate humidity conditions,humidity shows the highest correlation,mainly due to the reduction in the effects of ultraviolet aging.The infrared spectrum results show a maxi-mum increase of 433.9%in the carbonyl index and 1 220%in the sulfoxide index after aging,confir-ming the previous findings.The fluorescence microstructure results further support these results.关键词
SBS改性沥青/老化/热-光-水耦合条件/机理/相关性Key words
SBS modified asphalt/aging/thermal-ultraviolet-humidity coupled conditions/mechanism/relevance分类
通用工业技术引用本文复制引用
康迪,杨春烨,王志清,任皎龙,李颖..热-光-水耦合条件下SBS改性沥青老化性能与机理研究[J].山东理工大学学报（自然科学版）,2026,40(1):52-57,6.基金项目
国家自然科学基金项目(51808326) （51808326）
