水泥-乳化沥青-BTA混合料疲劳特性  

Fatigue performance of cementemulsified asphalt-BTA mixture

作　　者：赵伟 ZHAO Wei(Hebei Ruizhi Transportation Technology Consulting Co.,Ltd.,Hebei Provincial Structure and Material Technology of Road Innovation Center,Hebei Shijiazhuang 050000 China)

机构地区：[1]河北交规院瑞志交通技术咨询有限公司、河北省道路结构与材料技术创新中心,河北石家庄050000

出　　处：《山东交通科技》2023年第2期105-107,110,共4页

摘　　要：采用垂直振动方法成型水泥-乳化沥青-BTA混合料试件,深入研究其疲劳特性。应用Weibull分布建立了水泥-乳化沥青-BTA混合料疲劳方程,并与BTA混合料疲劳方程进行对比;分析了添加乳化沥青、水泥对BTA混合料疲劳特性的影响。研究表明:建立的水泥-乳化沥青-BTA混合料、BTA混合料疲劳方程能准确反映二者的疲劳寿命;乳化沥青、水泥的加入,改善了BTA混合料缺陷,增强了其柔韧性和强度,疲劳性能显著优于BTA混合料;水泥-乳化沥青-BTA混合料在50%失效概率下,疲劳方程回归系数a为2.68,b为0.17。Studied the fatigue performance of cementemulsified asphalt-BTA mixture,the specimens shaped by vertical vibrating test methed.The fatigue equation was established by the Weibull distribution,and compared the fatigue equation with BTA mixture.The influence of cement and emulsified asphalt to the fatigue performance to BTA mixture was analyzed.The tensile strength structure coefficient was studied.The results show that,the fatigue equations of cement-emulsified asphalt-BTA mixture and BTA mixture is correctly reflected the fatigue life of two.Cement and emulsified asphalt can improve BTA mixture,and enhance flexibility and strength,so as fatigue performance.Under 50%failure probability,the regression coefficients a of fatigue equation is 2.68,and b is 0.17.

关 键 词：垂直振动法 水泥-乳化沥青-BTA混合料 疲劳特性 疲劳方程 

分 类 号：U414[交通运输工程—道路与铁道工程]