沥青混合料永久变形特性对结合料广义动态剪切模量的响应  

Permanent Deformation Response of Asphalt Mixture to Generalized Dynamic Shear Modulus of Asphalt Binder

作　　者：韩海峰[1] 何桂平[2] 吕伟民[1] 

机构地区：[1]同济大学,上海200092 [2]长沙交通学院,湖南长沙410076

出　　处：《公路交通科技》2004年第3期1-5,共5页Journal of Highway and Transportation Research and Development

摘　　要：通过动态应力扫描测试获取各结合料60℃时峰值剪应力及相应剪应变的数据,采用BoxLucas模型拟合剪切应力-应变基本方程,并据此计算结合料在线粘弹区的广义剪切模量(GDSM)。研究表明,60℃时,结合料的GDSM与混合料的永久变形间具有良好的相关性,GDSM适合作为评价、区分结合料永久变形性能的指标。At 60℃, the data of peak shear stress and corresponding strain are tested for each of the binders with Dynamic Stresses Sweeps.In the linear viscoelastic region of binders, the GDSM is calculated based on the constitutive shear stress-strain equation that is obtained by fitting BoxLucas model to experimental data.Results indicate that, there is satisfactory correlativity between the GDSM and the average rut depth.It is appropriate using GDSM to rank the rutting resistance of the binders..

关 键 词：广义动态剪切模量(GDSM) 永久变形 沥青结合料 沥青混合料 BoxLucas模型 

分 类 号：U414.75[交通运输工程—道路与铁道工程]