回旋车辙试验仪与沥青混合料抗扭转性能  

Rotating Wheel Tracking Tester and Torsional Resistance of Asphalt Mixtures

作　　者：姚鸿儒 王强 陆广衍 周晓龙[1] YAO Hongru;WANG Qiang;LU Guangyan;ZHOU Xiaolong(Petroleum Processing Research Center,East China University of Science and Technology,Shanghai 200237,China;Shanghai Urban Construction NichiReki Special Asphalt Co.,Ltd.,Shanghai 200436,China;Shanghai Road and Bridge(Group)Co.,Ltd.,Shanghai 200433,China)

机构地区：[1]华东理工大学石油加工研究所,上海市200237 [2]上海城建日沥特种沥青有限公司,上海市200436 [3]上海公路桥梁(集团)有限公司,上海市200433

出　　处：《中外公路》2024年第4期91-96,共6页Journal of China & Foreign Highway

基　　金：上海市2021年度“科技创新行动计划”启明星项目(编号:21QB1401100)。

摘　　要：沥青路面在受到扭转力时,容易出现塑性变形和骨料飞散等病害,当前对于沥青混合料抗扭转性能的评价,尚无规范的试验方法和设备。为了研究沥青混合料抵抗扭转剪切性能的有效评价手段,该文介绍日本开发的3种设备的构造及工作原理,采用回旋车辙试验评价5种典型沥青混合料的抗扭转性能,分析沥青混合料抗扭转性能的影响因素。结果表明:沥青混合料的结构类型和胶结料种类对其抗扭转性能均有显著影响。虽然I-D改性沥青SMA-13混合料和高黏度改性沥青OGFC-13混合料具有相仿的动稳定度,但骨架空隙型混合料的抗扭转性能比骨架密实型更差。不同胶结料种类的沥青混合料在抗扭转性能上按优劣排序为:高黏度改性沥青+高模量剂、高黏度改性沥青、I-D改性沥青。半柔性铺装虽然抗扭转性能优异,但容易产生开裂。Asphalt pavement is prone to plastic deformation and aggregate raveling when it is in torsion.At present,there is no standard test method and equipment to evaluate the torsional resistance of asphalt mixtures.In order to study the effective evaluation method for the torsional shear resistance of asphalt mixtures,this paper introduced the structures and working principles of three kinds of equipment developed in Japan.The torsional resistance of five typical asphalt mixtures was evaluated by rotating wheel tracking tests,and factors affecting the torsional resistance of asphalt mixtures were analyzed.The results show that the types of structures and binders of asphalt mixtures have an obvious influence on the torsional resistance of asphalt mixtures.Though I-D modified asphalt SMA-13 mixtures and high-viscosity modified asphalt OGFC-13 mixtures have similar dynamic stability,the torsional resistance of void-skeleton asphalt mixtures is worse than that of denseskeleton ones.The torsional resistance of asphalt mixtures with different types of binders in descending order is high-viscosity modified asphalt+high modulus additive,high-viscosity modified asphalt,and I-D modified asphalt.Although semi-flexible pavement has excellent torsional resistance,it cracks easily.

关 键 词：抗扭转性能 回旋车辙试验仪 半柔性铺装 排水性沥青混合料 裂缝 

分 类 号：U414[交通运输工程—道路与铁道工程]