基于车辆超载预警系统的导电混凝土导电性能研究  

Research on conductive properties of conductive concretebased on vehicle overload early warning system

作　　者：冉武平[1] 虞晨曦 胡政 张祖盼 杨李程 艾贤臣[1] RAN Wuping;YU Chenxi;HU Zheng;ZHANG Zupan;YANG Licheng;AI Xianchen(School of Traffic and Transportation Engineering,Xinjiang University,Urumqi 830017,China;College of Civil Engineering and Architecture,Xinjiang University,Urumqi 830017,China;College of Civil Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]新疆大学交通运输工程学院,新疆乌鲁木齐830017 [2]新疆大学建筑工程学院,新疆乌鲁木齐830017 [3]湖南大学土木工程学院,湖南长沙410082

出　　处：《大连理工大学学报》2023年第4期408-415,共8页Journal of Dalian University of Technology

基　　金：新疆维吾尔自治区自然科学基金资助项目(2022D01C396);国家自然科学基金资助项目(51768070);国家大学生创新实验资助项目(202010755066)。

摘　　要：通过正交实验设计,进行了基于车辆超载预警系统的不同导电材料掺量比条件下导电混凝土导电性能探究.实验结果表明:1.2 MPa荷载以内,导电性能随着荷载的增大而增强,但增强趋势逐步衰减;通过压敏性分析,得出钢纤维体积分数0.15%、石墨体积分数1.00%、碳纤维体积分数0.35%、硅灰质量分数3.50%为导电材料的最佳掺量比;4种导电材料对导电混凝土压敏性和电阻的影响由强到弱分别为钢纤维、硅灰、石墨、碳纤维和硅灰、钢纤维、碳纤维、石墨;随着碾压次数的增多,试件的压敏性降低而压力敏感特性趋于稳定,第4次实验后压敏性下降3.5%,电流-荷载曲线均呈现先增大后减小的趋势.Through orthogonal experimental design, the conductive properties of conductive concrete based on vehicle overload early warning system are explored under the condition of mixing ratio of different conductive materials. The experimental results show that within the load of 1.2 MPa, the conductive properties increase with the increase of load, but the increase trend gradually decays. Through pressure sensitivity analysis, it is obtained that the optimum mixing ratios are that the steel fiber volume fraction is 0.15%, the graphite volume fraction is 1.00%, the carbon fiber volume fraction is 0.35% and the silicon ash mass fraction is 3.50%. The influences of the four conductive materials on the pressure sensitivity and resistance of the conductive concrete from strong to weak are steel fiber, silicon ash, graphite, carbon fiber and silicon ash, steel fiber, carbon fiber, graphite, respectively. With the increase of the number of rolling times, the pressure sensitivity of the specimen is reduced and the pressure sensitivity characteristics tend to be stable, the pressure sensitivity of the fourth test decreases by 3.5%, and the current-load curve increases firstly then decreases.

关 键 词：导电混凝土 导电性能 车辆超载预警系统 压敏性 

分 类 号：TU443[建筑科学—岩土工程]