摘要
为研究路面沥青混合料的高温抗剪性能,选定AC13和AC20典型级配沥青混合料为研究对象,通过三轴压缩试验研究了级配、温度和添加剂对混合料抗剪强度参数的影响,根据试验结果得到混合料性能参数粘聚力、内摩擦角与温度相关的非线性拟合方程,结合莫尔-库伦理论,建立与围压、温度相关的材料破坏面抗剪强度预测模型。结果表明:所得的两类级配沥青混合料全温度范围内的抗剪强度预测值与试验值有较好一致性。该预测模型对实际温度场下路面抗剪性能研究有一定参考价值。
In order to study shear strength performance of asphalt mixtures at high temperatures, two kinds of typical graded asphalt mixtures of AC13 and AC20 were selected, and then the effects of grading, temperature and additives on the shear strength parameters of asphalt mixture were investigated by the triaxial compression test. Based on the test results, a nonlinear fitting equation of mixture properties(cohesive force and internal friction) and temperature was gained. In combination of Mohr-Culomb theory, the prediction model of shear strength on the failure surface associated with pressure and temperature was further established. Results indicate that the predicted values of the shear strength of two types of asphalt mixtures have good consistency with the experimental values within the high-temperature range. The proposed prediction model is of some reference significance for researching the pavement shear properties in the actual temperature field.
作者
张小元
吕俊秀
王修山
刘帅
ZHANG Xiaoyuan;Lü Junxiu;WANG Xiushan;LIU Shuai(School of Civil Engineering and Architecture,Zhejiang Sci-Tech University,Hangzhou 310018,China;Architectural Design & Research Institute of Zhejiang University Co.,Ltd.,Hangzhou 310028,China)
出处
《浙江理工大学学报（自然科学版）》
2019年第5期682-687,共6页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
国家自然科学基金项目(51808500)
浙江省自然科学基金项目(LQ19E080025)
浙江理工大学科研启动项目(18052139-Y)
浙江省土木工程一流学科(B)建设计划
关键词
沥青混合料
抗剪强度
预测模型
三轴压缩试验
asphalt mixture
shear strength
prediction model
triaxial compression test
