- 目录
- 混凝土与制品
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用于结构损伤自监测的智能混凝土电阻-损伤试验
作者：吴文鑫1，田雨婷1，陈锦毅1，翟笑秋2，刘琼1
（1.江苏大学 土木工程与力学学院，江苏 镇江 212013；
2.江苏大学 机械工程学院，江苏 镇江 212013）
摘要：研究了石墨烯智能混凝土电阻率与损伤之间的关系，向试件施加轴向载荷以及循环载荷，通过电阻率的变化反应混凝土的损伤程度，同时使用非金属超声探伤仪器测量波速，根据应力波理论，表征试件的损伤程度；将损伤与电阻率进行对比，利用隧道效应理论解释电阻率变化的原因，最终得出混凝土损伤与电阻率之间的关系。
关键词：智能混凝土；应力波；超声探伤；损伤监测；电阻
中图分类号：TU528 文献标识码：A 文章编号：1001-702X（2019）02-0027-05
The experimental study on the correlation of resistivity and damage for smart concrete for
internal monitoring of structure
WU Wenxin1，TIAN Yuting1，CHEN Jinyi1，ZHAI Xiaoqiu2，LIU Qiong1
（1.Faculty of Civil Engineering and Mechanics，Jiangsu University，Zhenjiang 212013，China；
2.School of Mechanical Engineering，Jiangsu University，Zhenjiang 212013，China）
Abstract：This paper investigates the correlation of conductivity and damage of the graphene intelligent concrete. Under axial load and cyclic load to the specimen，the change of the concrete damage degree can be shown through the change of resistivity. At the same time，through making use of the nonmetal ultrasonic flaw detection instrument to measure the damage degree of the specimens，according to the stress wave theory，the relation between the damage evolution in concrete and variation of ultrasonic velocity is obtained. The damage is compared with resistivity. The cause of resistivity change is explained by tunnel effect theory. Eventually concluding in the correlation of concrete damage and its resistivity.
Key words：smart concrete，stress wave，ultrasonic testing，damage monitoring，resistance