基于光氧老化的沥青表面微观粘附特性研究  

Research on Micro Adhesion Characteristics of Asphalt Surface Based on Photooxidative Aging

作　　者：任俊达 Ren Junda(Liaoning Provincial Transportation Investment Group Co.,Ltd.,Shenyang 110166,China)

机构地区：[1]辽宁省交通建设投资集团有限责任公司,沈阳市110166

出　　处：《北方交通》2022年第11期50-53,57,共5页Northern Communications

摘　　要：光氧老化影响沥青路面的服役寿命,对沥青路面使用耐久性造成不良影响。采用自主研发的多因素耦合环境控制箱,对不同标号的基质沥青开展了紫外光照、温度、湿度等多因素作用下的老化试验研究,应用AFM技术探究老化沥青表面微观粘附特性的变化规律。结果表明:随着老化时长的增加,沥青表面微观粘附力都呈下降趋势,其中90#基质沥青的粘附特性变化最为显著。The service life of photooxidative aging asphalt pavement is affected,which has a negative impact on its durability.The self-developed multi factor coupling environmental control box is used to carry out the aging test research on the matrix asphalt of different grades under the action of multiple factors such as UV light,temperature,humidity and so on,and the AFM technology is used to explore the change law of the micro adhesion characteristics of the aged asphalt surface.The results show that:the micro adhesion of asphalt surface decreases with the increase of aging time,in which the adhesion characteristics of 90#matrix asphalt change most significantly.

关 键 词：光氧老化 沥青 AFM 老化试验 微观粘附特性 

分 类 号：U416.217[交通运输工程—道路与铁道工程]