大连理工大学学报2025，Vol.65Issue(4)：423-430,8.DOI:10.7511/dllgxb202504013
基于DSR修正试验的老化沥青低温性能研究
Research on low-temperature performance of aging asphalt based on DSR correction experiment
摘要
Abstract
In order to objectively and comprehensively evaluate the low-temperature performance of aging asphalt binder,dynamic shear rheometer(DSR)correction experiment method is proposed.Based on time-temperature equivalent principle,the low-temperature performance of five different asphalt binders at different aging time is investigated by using two indexes of relaxation modulus and relaxation rate,and a nonlinear prediction model of low-temperature performance with aging time is established.The results show that the DSR correction experiment method is suitable to evaluate the low-temperature performance of aging asphalt binders.For base asphalt,the fastest decay of low-temperature performance occurs in the short-term aging stage,and with the growth of aging time,the relaxation modulus gradually increases and the relaxation rate gradually decreases.For modified asphalt,its low-temperature performance degradation law is basically the same as that of base asphalt,but there is a gentle transition period.关键词
道路工程/老化沥青/低温性能/DSR修正试验/评价指标/预估模型Key words
road engineering/aging asphalt/low-temperature performance/DSR correction experiment/evaluation index/prediction model分类
交通工程引用本文复制引用
钟国亮,童以文,刘亚敏,韩旭晖,高晨光..基于DSR修正试验的老化沥青低温性能研究[J].大连理工大学学报,2025,65(4):423-430,8.基金项目
国家自然科学基金资助项目(52278431,51608048) （52278431,51608048）
福建省交通运输科技计划资助项目(202236). （202236）
