Evotherm温拌沥青混合料两阶段设计方法应用研究  

Two-Stage Design Method for the Evotherm Warm-Mix Asphalt Mixtures

作　　者：李正中[1,2] 魏如喜[1,2] 宋晓燕[1,2] 马涛[3] 

机构地区：[1]天津市市政工程研究院,天津300074 [2]天津市路桥技术工程中心,天津300074 [3]东南大学交通学院,江苏南京210096

出　　处：《重庆交通大学学报（自然科学版）》2013年第4期610-613,700,共5页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金项目(51008075)

摘　　要：分析Evotherm温拌技术工作原理及其混合料设计现状,提出了两阶段设计法;基于沥青用量及试验温度双参数体系,在热拌混合料设计基础上对Evotherm温拌混合料进行材料组成设计,并以成型试件体积参数基本相等来确定施工控制温度;采用该方法在GTM方式下对Evotherm温拌SBS改性沥青混合料进行应用研究。试验表明:所设计的Evotherm温拌改性沥青混合料的路用性能整体上优于同类型热拌混合料,而且,该方法将温拌混合料材料设计与热拌混合料相结合,能够有效避免现行设计方法存在的风险,对其他温拌技术具有普适意义。By analyzing the principle of Evotherm warm-mix technology and the current situation of design method for warm-mix asphalt mixtures,it is the first time to propose the two-stage design method.Based on two-parameter system including asphalt content and test temperature,the components of Evotherm warm-mix asphalt mixtures are optimized,considering the design data of hot-mix asphalt mixtures.The control temperature is determined according that the volume parameters of specimen are basically equal.Based on the two-stage design method,GTM molding method is used to design Evotherm warm-mix SBS-modified-asphalt mixtures.The test results show that the pavement performance of Evotherm warm-mix modified-asphalt mixtures are superior to that of hot-mix mixtures,and the two-stage design method can make the materials design for Evotherm warm-mix asphalt mixtures combine with corresponding hot-mix mixtures,which can effectively avoid the risk of current design method,and provide universal significance for other warm-mix technologies.

关 键 词：Evotherm温拌技术 沥青混合料 配比设计 应用 

分 类 号：U414[交通运输工程—道路与铁道工程]