沥青路面裂缝密封胶的低温力学行为分析  

Low-temperature Mechanical Behavior Analysis of Asphalt Pavement Crack Sealants

作　　者：李峰[1] 黄颂昌[1] 

机构地区：[1]交通运输部公路科学研究院道路结构与材料交通行业重点实验室,北京100088

出　　处：《武汉理工大学学报（交通科学与工程版）》2014年第3期516-519,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目(批准号:51008146);交通运输部交通建设科技项目(批准号:2011318223410)资助

摘　　要：为了研究沥青路面裂缝密封胶的低温力学行为,进行了3种加热型密封胶和1种有机硅密封胶的低温拉伸试验,根据劲度模量-温度行为特征理论分析试验过程的荷载-位移曲线.结果表明,3种加热型密封胶分别处于玻璃体、玻璃化转换区和橡胶体状态,有机硅密封胶表现为虎克弹性体.为保证良好的低温路用性能,加热型密封胶的最低使用温度应大于玻璃化转换温度,有机硅密封胶应具有较大的位移变形能力.In order to describe low-temperature mechanical behavior of asphalt pavement crack sealants,three hot-applied sealants and one silicone sealant were conducted by bond test,the load-displacement curves of the test were analyzed by stiffness modulus--temperature behavior characteristics theory.The results showed that three hot-applied sealants were in vitreous,glass transition region and rubber body state,respectively.And silicone sealant was Hooke elastomer.In order to ensure good field performance,the lowest temperature in areas where hot-applied sealants applied should higher than its glass transition temperature,and silicone sealant should have good extension performance.

关 键 词：道路工程 裂缝 密封胶 低温拉伸试验 低温力学行为 

分 类 号：U414[交通运输工程—道路与铁道工程]