沥青混凝土双轴压缩强度试验研究  

Study on Biaxial Compression Strength Test of Asphalt Concrete

作　　者：锁利军 栗培龙[2] 王秉纲[2] SUO Lijun;LI Peilong;WANG Binggang(Civil Engineering Department,Shanxi Institute of Technology,Yangquan 045000,China;Key laboratory of Highway Engineering in Special Region of Ministry of Education,Chang’an University,Xi’an 710064,China)

机构地区：[1]山西工程技术学院土木工程系,阳泉045000 [2]长安大学特殊地区公路工程教育部重点实验室,西安710064

出　　处：《武汉理工大学学报（交通科学与工程版）》2023年第2期307-311,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金面上项目(51878061);山西省高等学校科技创新项目(2021L594)。

摘　　要：文中对五个不同油石比成型的立方体试件进行了双轴压缩强度试验研究.结果表明:加载速率2、5.08 mm/min时,15、20℃的双轴强度明显高于20、25℃的值.加载速率8.16 mm/min,当油石比从4.5%到5.5%时,25℃的双轴强度值高于20℃的值.应力-应变曲线具有前期小范围线性增长,中期非线性快速增长,后期增长趋缓的特点.得到了双轴压缩强度的回归模型.The biaxial compressive strength of five cubic specimens with different asphalt-aggregate ratios was studied.The results show that the biaxial strength at 15 and 20℃is obviously higher than that at 20 and 25℃when the loading rate is 2 and 5.08 mm/min.When the loading rate is 8.16mm/min,the biaxial strength at 25℃is higher than that at 20℃when the asphalt-aggregate ratio is from 4.5%to 5.5%.The stress-strain curve has the characteristics of small-scale linear growth in the early stage,rapid nonlinear growth in the middle stage and slow growth in the later stage.The regression model of biaxial compressive strength is obtained.

关 键 词：道路工程 沥青混凝土 第二主应力 立方体试件 双轴压缩试验 强度 回归模型 

分 类 号：U416.01[交通运输工程—道路与铁道工程]