沥青膜厚度对混合料水稳定性的影响  

Effect of Asphalt Film Thickness on the Moisture Sensitivity of Asphalt Mixture

作　　者：余志凯 黄刚[2] 胥吉[3] 

机构地区：[1]重庆市交通工程监理咨询有限责任公司,重庆400060 [2]重庆交通大学土木建筑学院,重庆400074 [3]广东省长大公路工程有限公司,广州510620

出　　处：《北方交通》2010年第7期17-19,共3页Northern Communications

摘　　要：影响沥青混合料水稳定性的因素有很多,主要研究沥青膜厚度与水稳定性之间的关系。通过旋转压实仪成型5种沥青膜厚度的圆柱体试件,采用改进Lottman试验评价不同沥青膜厚度的沥青混合料水稳定性。试验结果表明:沥青膜厚度与改进Lottman试验结果相关性好,基于水稳定性优化设计的最佳沥青膜厚度为9～11μm。Many variables affect the amount of the moisture damage which occurs in an asphalt mixture. This study is aimed to determine the relationship between asphalt film thicknesses and the susceptibility characteristics to water of HMA. The modified Lottman Test is performed on the Superpave Gyratory compacted specimens that contain 5 different asphalt film thicknesses. The results show that a good correlation between the asphalt film thickness and the modified Lottman test results as well as an optimum asphalt film thickness of 9 - 11 um is obtained.

关 键 词：沥青膜厚度 水稳定性 水损害 剥离 

分 类 号：U416[交通运输工程—道路与铁道工程]