南京航空航天大学学报2013，Vol.45Issue(1)：152-156,5.
橡胶沥青紫外光老化性能试验研究
Study on Properties of Ultraviolet Aged Rubber Asphalt
摘要
Abstract
In order to study performances of the rubber asphalt after ultraviolet aging, softening point, viscosity, fatigue factor, creep stiffness and rate of creep are tested through Brinell viscometer, dynamic shear rheometer (DSR) and bending beam rheometer (BBR). The results show that with the increasing of aging time the high temperature stability of aged asphalt is improved and that anti-fatigue cracking performance and low temperature performance of rubber asphalt decline gradually. When aging temperature is higher than 60 ℃, rubber asphalt is effected by thermooxidative aging and ultraviolet aging. Incremental ranges of softening point and viscosity are great, anti-fatigue cracking performance and low temperature performance of rubber asphalt are apparently affected. Through the gray relationship analysis, with the increase of aging time and aging temperature, the impact on anti-fatigue cracking performance and low temperature performance of rubber asphalt is significant. At the same time, the rate of creep is not fit for evaluating the performance of asphalts after ultraviolet aging.关键词
橡胶沥青/紫外光老化/抗疲劳开裂能力/低温性能/灰关联分析Key words
rubber asphalt/ ultraviolet agingi anti-fatigue cracking performance/ low temperature performance/ gray relationship analysis分类
交通工程引用本文复制引用
肖鹏,吴美平,蒋德安..橡胶沥青紫外光老化性能试验研究[J].南京航空航天大学学报,2013,45(1):152-156,5.基金项目
国家自然科学基金(51178409)资助项目. （51178409）
