掺橡胶粉的水泥稳定碎石混合料技术性能研究  

Research on Technical Characteristics of Cement Stabilized Macadam Mixed with Rubber Powder

作　　者：王军龙[1] 

机构地区：[1]西安铁路职业技术学院土木工程系,陕西西安710014

出　　处：《筑路机械与施工机械化》2016年第2期46-51,共6页Road Machinery & Construction Mechanization

基　　金：国家自然科学基金项目(51308116)

摘　　要：基于无侧限抗压强度试验、温缩试验、冻融循环及间接拉伸疲劳试验,系统研究了橡胶粉掺量对水泥稳定碎石混合料强度特性、力学性能和抗疲劳耐久性的影响,并基于SEM图像分析技术揭示了橡胶粉对水泥稳定碎石混合料的改善机理。试验结果表明:掺加橡胶粉后水泥稳定碎石的抗温缩性能和抗疲劳开裂性能显著提高,橡胶粉能够有效地分散荷载、消散应变能,基于抗疲劳耐久性推荐适宜水泥稳定碎石混合料的橡胶粉掺量为4%。The impact of rubber powder content on the strength, mechanical properties and fatigue resistance durability of cement stabilized macadam was studied by running unconfined compressive strength test, temperature shrinkage test, freeze thaw test and indirect tensile fatigue test. The mechanism for the improvement was revealed by image analyzing technology of SEM. The results show that cement stabilized macadam mixed with rubber powder has better temperature shrinkage resistance and fatigue cracking resistance performance; rubber powder can effectively disperse the load and dissipate strain energy; based on fatigue resistance durability, rubber powder content is recommended with 4%.

关 键 词：水泥稳定碎石 橡胶粉 抗疲劳耐久性 路用性能 

分 类 号：U414.1[交通运输工程—道路与铁道工程]