摘要
基于长期服役的老化沥青路面,围绕横纵缝和坑槽两种病害位置,在沥青路面的上、中两个面层钻芯取样。实验室抽提回收得到老化沥青,通过老化沥青的频率特性、温度特性来分析其流变性能,对沥青路面进行路面沥青材料使用性能评价。结果表明,沥青路面在长期服役过程中,沥青复合模量增加,相位角减小,沥青材料老化作用显著,并且罩面层沥青由于与外界环境直接接触,其沥青的老化程度大于上面层。
Core samples were collected from transverse and longitudinal crack area and pot holes area on along-term service pavement. Aged asphalt was extracted from the collected specimens. The rheological properties of the recoveredit evaluated by means of Dynamic Shearrheometer（ DSR）. The temperature / frequency sensitivities were characterized to predict its performance.Results show that asphalt aging occurs during the service life. Comparing to the middle layer,the surface layer agedfaster.
出处
《武汉理工大学学报》
CAS
北大核心
2015年第10期42-46,共5页
Journal of Wuhan University of Technology
关键词
沥青路面
动态剪切流变实验
流变性能
asphalt pavement
dynamic shear rheological experiments
rheological properties
