高黏改性沥青的流变性能分析  

Rheological Properties of High Viscosity Modified Asphalt

作　　者：周庆福 刘星[3] 汪林 罗蓉[1,2] 曾哲 ZHOU Qingfu;LIU Xing;WANG Lin;LUO Rong;ZENG Zhe(School of Transportation,Wuhan University of Technology,Wuhan 430063,China;Hubei Highway Engineering Research Center,Wuhan 430063,China;CCCC Second Highway Consultants Co. Ltd.,Wuhan 430056,China;Wuhan Hanyang Municipal Construction Group Co. Ltd.,Wuhan 430050,China)

机构地区：[1]武汉理工大学交通学院,武汉430063 [2]湖北省公路工程技术研究中心,武汉430063 [3]中交第二公路勘察设计研究院有限公司,武汉430056 [4]武汉市汉阳市政建设集团公司,武汉430050

出　　处：《武汉理工大学学报（交通科学与工程版）》2019年第4期687-691,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：中国交建重大研发项目(2016-ZJKJ-11);武汉市城乡建设委员会科技计划项目(201803)资助

摘　　要：为了探究高黏改性沥青与普通沥青的流变性能差异,分别从黏度、剪切模量、疲劳开裂和永久变形等方面对沥青进行流变性能试验分析,结果表明,高黏改性沥青的黏度远大于70#基质沥青和SBS改性沥青,同时,其线性黏弹性范围的剪切模量与SBS改性沥青接近,抗疲劳开裂能力弱于SBS改性沥青.从愈合性能来看,间歇时间越长,高黏改性沥青的恢复能力越强,与其他沥青的愈合效果差别也越大.其抵抗高温永久变形的能力与SBS改性沥青接近而远优于70#基质沥青.In order to explore the difference of rheological properties between high viscosity modified asphalt and common asphalt, the rheological properties of asphalt were tested and analyzed from viscosity, shear modulus, fatigue cracking and permanent deformation. The results show that the viscosity of high viscosity modified asphalt is much higher than that of 70# matrix asphalt and SBS modified asphalt. Meanwhile, the shear modulus of its linear viscoelastic range is close to that of SBS modified asphalt, and its fatigue cracking resistance is weaker than that of SBS modified asphalt. Judging from the healing performance, the longer the interval time, the stronger the recovery ability of high viscosity modified asphalt, and the greater the difference between the healing effect and other asphalt. Its ability to resist high temperature permanent deformation is close to SBS modified asphalt and far superior to 70# matrix asphalt.

关 键 词：道路工程 高黏沥青 动态剪切模量 疲劳开裂 愈合能力 永久变形 

分 类 号：U414[交通运输工程—道路与铁道工程]