应力吸收层沥青混合料的路用特性  

Road performance of stress absorbing layers in asphalt mixture

作　　者：李祖仲[1] 陈拴发[1] 张登良[1] 陈华鑫[1] 周燕[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《长安大学学报（自然科学版）》2008年第2期5-8,共4页Journal of Chang’an University(Natural Science Edition)

基　　金：国家西部交通建设科技项目(200231800030)

摘　　要：通过对自主研发的Sampave特种改性沥青的应力吸收层混合料进行低温弯曲试验,分析沥青结合料对应力吸收层沥青混合料低温抗裂性能的影响;采用拉伸与拉压疲劳试验,比较不同沥青结合料的应力吸收层混合料抗拉伸变形与抗拉压疲劳性能。结果表明,研发的Sampave特种改性沥青混合料具有优良的低温抗裂、抗拉伸和抗拉压疲劳性能,但单一改性剂SBR改性沥青并不能达到应力吸收层沥青结合料的性能要求。This paper carried out the bending beam test on the materials in stress absorbing layers of Sampave asphalt, analyzed the influences of asphalt binder on anti-cracking performance, carried out the tensile and tension-compression fatigue tests on the materials in stress absorbing layers with the different asphalts, and then evaluated the influences of asphalt binder on anti- tensile and fatigue performances. The results show that Sampave asphalt mixture has a better performance for preventing cracks under low temperature and also for resisting tension- compression fatigue. But the performance of SBR asphalt is lower than the one of asphalt binder in stress absorbing layers. 5 tabs, 2 figs, 11 refs.

关 键 词：道路工程 反射裂缝 SAMPAVE 应力吸收层 路用性能 

分 类 号：U414.75[交通运输工程—道路与铁道工程]