摘要
选用水热敏感性实验模拟高温动水冲刷环境,评价了钢渣沥青混合料的水热敏感性。通过动态模量实验、三轴重复荷载蠕变实验、间接拉伸疲劳实验研究了高温动压水冲刷作用对钢渣沥青混合料的力学性能、蠕变性能和疲劳性能的影响。构建了高温动水冲刷作用前后3种钢渣沥青混合料的动态模量主曲线、永久变形粘弹性力学模型和应力疲劳方程。结果表明,高温动水冲刷作用后,钢渣沥青混合料的动态模量、疲劳寿命下降,永久变形增大。钢渣沥青混合料的动态模量主曲线、永久变形粘弹性力学模型和应力疲劳方程拟合效果良好。
The moisture induced stress test is used to simulate the high-temperature dynamic water scouring environment to evaluate the hydrothermal sensitivity of steel slag asphalt mixture.Through dynamic modulus test,triaxial repeated load creep test and indirect tensile fatigue test,the effects of high temperature dynamic water scouring on the mechanical properties,creep properties and fatigue properties of steel slag asphalt mixture are studied.The dynamic modulus master curve,permanent deformation viscoelastic mechanical model and stress fatigue equation of three kinds of steel slag steel slag asphalt mixture before and after high temperature dynamic water scouring are constructed.The results show that after high temperature dynamic water scouring,the dynamic modulus and fatigue life of steel slag asphalt mixture decrease,and the permanent deformation increases.The dynamic modulus master curve,permanent deformation viscoelastic model and stress fatigue equation of steel slag asphalt mixture are well fitted.
作者
张庆宇
罗京
陈超
赵毅
张艳娟
ZHANG Qing-yu;LUO Jing;CHEN Chao;ZHAO Yi;ZHANG Yan-juan(National&Local Joint Engineering Laboratory of Traffic Civil Engineering Materials,Chongqing Jiaotong University,Chongqing 400074,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;School of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Hebei Qiancao Expressway Development Co.,Ltd.,Tangshan 063200,China)
出处
《应用化工》
CAS
CSCD
北大核心
2023年第2期456-463,共8页
Applied Chemical Industry
基金
河北省交通运输厅科技项目(QC2018-3)
重庆市研究生联合培养基地建设项目(JDLHPYJD2021011)
重庆交通大学交通土建工程材料国家地方联合工程实验室开放基金项目(LHSYS-2021-002)。
关键词
钢渣沥青混合料
水热敏感性
动态模量
永久变形
疲劳性能
steel slag asphalt mixture
moisture induced stress
dynamic modulus
permanent deformation
fatigue performance
