钢桥面复合改性沥青混合料铺装路用性能研究  

Research on Performance of Compound Modified Asphalt Mixture in Steel Deck Pavement

作　　者：李宇峙[1] 徐敏[2] 黄云涌[1] 颜奇[1] 

机构地区：[1]长沙理工大学,湖南长沙410076 [2]中南勘测设计研究院,湖南长沙410014

出　　处：《公路交通科技》2010年第3期81-85,共5页Journal of Highway and Transportation Research and Development

基　　金：教育部高等学校博士学科点专项科研基金资助项目(20070536001)

摘　　要：针对钢桥面铺装早期损坏中热稳定性不足的问题,依据聚合物改性原理,选取了3种改性剂,通过设计正交试验,采用极差分析和综合平分法,研制出了一种钢桥面铺装新材料——复合改性沥青;测试了该胶结料的基本性能,并对其混合料进行了高温车辙、低温弯曲、水稳定性及疲劳试验。结果表明:复合改性沥青的温度敏感性低、抗剪切变形能力强,其混合料的路用性能均得到了明显改善,尤其是高温抗车辙能力提高显著,且经济效益可观,适用于钢桥面铺装。To cope with the deficiency of high temperature stability in early damages of steel deck pavement,based on theory of polymer modification,three polymer modifiers were used to develop a new material（compound modified asphalt）for steel deck pavement by designed orthogonal test together with range analysis and synthesis score method.Performances of the compound modified asphalt and its mixture were measured,and the tests such as rutting test,low temperature bending test,water stability test and fatigue test were performed.The result shows that the compound modified asphalt has lower temperature susceptibility and better ability to resist shear deformation.The performance of the mixture was improved remarkably especially the capacity of rutting resistance,and its economic benefit is considerable.Thus the mixture is suitable for steel bridge deck pavement.

关 键 词：桥梁工程 钢桥面铺装 复合改性沥青 路用性能 经济效益 

分 类 号：U416.1[交通运输工程—道路与铁道工程]