耐久性高模量混合料间接拉伸模量试验影响因素研究  

Study on Influence Factors of Indirect Tensile Modulus Test of Durable High Modulus Asphalt Mixture

作　　者：关永胜[1] 李小燕[1] 李豪[1] 韩超[1] 贾渝[1] 

机构地区：[1]新型道路材料国家工程试验室,江苏省公路运输工程实验室,江苏省交通科学研究院股份有限公司,江苏南京211112

出　　处：《公路工程》2015年第4期51-54,73,共5页Highway Engineering

基　　金：科学技术部国际科技合作与交流专项项目(2010DFB83850)

摘　　要：采用耐久性高模量沥青混合料,分析研究影响间接拉伸模量试验的各因素,包括:试件的存放时间、试验温度、高模量剂比例、油石比、沥青的类型等,得到了各相关因素与混合料间接拉伸模量之间的相关关系:随着存放时间的延长,添加剂比例的增大,试件的间接拉伸模量逐渐增大;随着试验温度的升高,油石比的增大,试件的间接拉伸模量显著下降;同时,沥青类型不同,混合料的间接拉伸模量均存在差异,即使是相同标号的沥青,间接拉伸模量值也不完全一样,也可能存在较大的差异。通过该研究为用间接拉伸模量试验评价耐久性高模量沥青混合料时参数的选取提供一定的借鉴意义。This paper analyses the influence factors on the indirect tensile modulus test of durable high modulus asphalt mixture,including： specimen storage time,test temperature,the content of high modulus additive,asphalt aggregate ratio,asphalt type. It shows the relationship between each factors and the indirect tensile modulus associated with mixture. Indirect tensile modulus of specimens increase gradually along with the extension of storage time and increasing of the proportion of additive; the indirect tensile modulus of specimens decrease significantly with the increasing of test temperature and asphalt aggregate ratio increasing. At the same time,the asphalt type is different,and there are differences in the mixture＇s indirect tensile modulus; Even the grade of asphalt is the same,indirect tensile modulus values are not exactly the same,and there may be larger differences. Through the research,it provides certain reference significance for the selection of the evaluation parameters of indirect tensile modulus test on durable high modulus asphalt mixture.

关 键 词：耐久性高模量沥青混合料 间接拉伸模量试验 影响因素 试验研究 

分 类 号：U414.1[交通运输工程—道路与铁道工程]