摘要
为了避免在道路大修中因中面层材料选择不当而导致的路面病害,通过采用中面层常用的SBS改性沥青、橡胶改性沥青AC-20型混合料,测试其体积指标及路用性能指标,综合评价其路用性能优劣,推荐合适的道路大修中面层材料。中面层作为面层结构中承上启下的一层,需要足够的高温稳定性以对抗车辙,良好的低温抗裂及抗疲劳性能以防止裂缝产生。研究结果表明,当原路段车辙及开裂等病害严重时,应优先使用橡胶改性沥青混合料;当路段有较多水损害时,可考虑使用SBS改性沥青混合料。
In order to avoid pavement diseases caused by improper selection of materials for binder course during major maintenance,the volume indicators and pavement performance were tested on AC-20 mixtures with SBS and rubber modified asphalt binders commonly used in the binder course.Through comprehensive evaluation of the pavement performance,suitable surface materials for major maintenance were recommended.As an intermediate course,the binder course needs sufficient stability at high temperature to resist rutting,and good crack resistance at low temperature and fatigue resistance to prevent cracks.The research results show that when the original road section has serious rutting and cracks and other diseases,rubber modified asphalt mixture is preferred;when the road section has severe water damage,SBS modified asphalt mixture should be considered.
作者
郭昱涛
王鑫
张业兴
李劲薪
马霞
何茂胜
徐世法
GUO Yu-tao;WANG Xin;ZHANG Ye-xing;LI Jin-xin;MA Xia;HE Mao-sheng;XU Shi-fa(School of Civil and Traffic Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Guizhou Highway Engineering Group Co.,Ltd.,Guiyang 550004,Guizhou,China;Beijing Urban Transportation Infrastructure Engineering Technology Research Center,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
出处
《筑路机械与施工机械化》
2020年第6期5-8,共4页
Road Machinery & Construction Mechanization
基金
北京建筑大学未来城市设计高精尖创新中心重大科技项目(2018-02-05)
北京建筑大学市属高校基本科研业务费专项资金资助(X18201、X18200)
国家自然基金项目(51678028)
北京市交通委员会科技项目(XM-0170104230180726004)。
关键词
道路工程
大修
中面层
路用性能
highway engineering
major maintenance
binder course
pavement performance
