冷拌冷铺沥青混合料动态模量及其主曲线研究  

Dynamic modulus and master curve of cold-mix-cold-laid asphalt mixture

作　　者：刘伟胜 李思童 黄玉颖 刘然 李林涛 LIU Weisheng;LI Sitong;HUANG Yuying;LIU Ran;LI Lintao(Jiangxi Provincial Expressway Investment Group Co.Ltd.,Nanchang 330025,China;Beijing University of Civil Engineering and Architecture Beijing Advanced Innovation Center for Future Urban Design,Beijing 100044,China;Beijing Traffic Commission Road Political Bureau Fangshan Highway Branch,Beijing 102488,China;Henan Zhongyuan Expway Co.Ltd.,Zhengzhou 450000,China)

机构地区：[1]江西省高速公路投资集团,江西南昌330025 [2]北京建筑大学未来城市设计高精尖创新中心,北京100044 [3]北京市交通委员会路政局房山公路分局,北京102488 [4]河南中原高速公路股份有限公司,河南郑州450000

出　　处：《新型建筑材料》2018年第10期150-153,共4页New Building Materials

基　　金：国家自然科学基金项目(51678028);未来城市设计高精尖创新中心重大科技项目(2018-02-05)

摘　　要：在90℃养生24 h条件下,对乳化型和溶剂型冷拌冷铺沥青混合料的静、动态回弹模量进行测试;基于时温等效原理,采用非线性最小二乘法进行拟合,确定了2种冷拌冷铺沥青混合料的动态模量主曲线,通过主曲线求解出2种混合料的移位因子,据此对其高低温性能进行了预测;并与静态模量进行对比分析。结果表明:温度和频率对冷拌冷铺沥青混合料影响较大;频率较低时的动态模量与静态模量相对应;与溶剂型沥青混合料相比,乳化型沥青混合料的低温抗变形和高温抗车辙性能更高。Solvent asphalt mixture and emulsified asphalt mixture are new types of cold-mix-cold-laid asphalt mixture, in this paper,the dynamic and static recoil modulus of two different types of cold-mix-cold-laid asphalt mixture are tested at 90 degrees Celsius for 24 hours;According to the time temperature equivalence principle,fitting by nonlinear least squares method,the dynamic modulus master curve and shift factors of the two asphalt mixtures are determined,and the high-and-low temperature performance is predicted. Finally,it is compared and analyzed with the modulus of compressive resilience. The results show that：the dynamic modulus of cold mixed asphalt mixture is influenced by temperature and frequency,the compressive resilience modulus corresponds to the dynamic modulus when the frequency is low, and compared with the solvent asphalt mixture,the high temperature rutting resistance and the low-temperature deformation resistance of the emulsified asphalt mixture are higher.

关 键 词：冷拌沥青混合料 乳化型沥青 溶剂型沥青 动态模量 主曲线 移位因子 

分 类 号：TU535[建筑科学—建筑技术科学]