高粘性沥青应力吸收层防治反射裂缝研究  

Prevention of reflective cracks with high viscous asphalt stress absorbing layer

作　　者：谭忆秋[1] 石昆磊[1] 李丽敏[2] 陈国明[2] 纪伦[1] 

机构地区：[1]哈尔滨工业大学交通科学与工程学院,哈尔滨150090 [2]黑龙江省交通厅计划统计处,哈尔滨150040

出　　处：《哈尔滨工业大学学报》2008年第2期241-245,共5页Journal of Harbin Institute of Technology

基　　金：教育部博士点基金资助项目(20060213002)

摘　　要：为提高半刚性基层沥青路面的防反射裂缝能力,采用高粘性沥青、改进的Superpave方法设计了富沥青、砂粒式的应力吸收层沥青混合料.试验研究表明,高粘性沥青应力吸收层混合料具有极好的低温变形、抗疲劳及弹性恢复能力,并具有较高的抗拉伸能力,能有效延缓沥青路面反射裂缝的发生,采用此材料铺筑的试验路和观测结果验证了室内试验的结论.In order to improve the capability of preventing the reflective cracks of semi - rigid base asphalt pavement, a new stress absorbing layer asphalt mixtures was designed by adopting high viscous asphalt and improved Superpave mix design method. Abundant asphalt and fine aggregates gradation are the main traits of this new mixture. Test results show that this new material is flexible at low temperature and can recover rapidly; it has high anti -fatigue ability and strength, so it is effective on preventing the reflective cracks. The laboratory resuits were proved well according to the observations from actual test road built by the new stress absorbing layer asphalt mixtures.

关 键 词：高粘性沥青 反射裂缝 应力吸收层 SUPERPAVE设计方法 抗疲劳性能 

分 类 号：U414[交通运输工程—道路与铁道工程]