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- 混凝土与制品
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石墨钢珠复相智能树脂混凝土的压敏性研究
作者：肖桐1，丁勇1，崔信国2，刘荣桂3，杨叶1
（1.南京理工大学 土木工程系，江苏 南京 210094；2.煤炭工业济南设计研究院有限公司，山东 济南 250031；
3.江苏大学 土木工程与力学学院，江苏 镇江 212013）
摘要：通过加入特定的导电掺料，可以使树脂混凝土具有良好的压敏特性。综合其优良的机械性能，可以将预制件置于建筑构件的关键部位作为监测元件。以掺入石墨粉和钢珠的树脂混凝土为材料制备立方体试件，测试其在重复荷载下的电阻变化和应变的对应关系。试验结果表明：试件具有良好的压敏特性；随着加载次数的增加，试件的灵敏度略有降低，整体重复性表现良好。
关键词：导电掺料；树脂混凝土；压敏特性；健康监测
中图分类号：TU528.41 文献标识码：A 文章编号：1001-702X（2018）12-0010-04
Compression-sensibility of graphite and steel bead diphasic intelligent epoxy resin concrete
XIAO Tong1，DING Yong1，CUI Xinguo2，LIU Ronggui3，YANG Ye1
（1.Department of Civil Engineering，Nanjing University of Science and Technology，Nanjing 210094，China；
2.Coal Industry Jinan Design and Research Institute Co. Ltd.，Jinan 250031，China；
3.School of Civil Engineering and Mechanics，Jiangsu University，Zhenjiang 212013，China）
Abstract：After adding some specific conductive materials，the resin concrete will have good compression-sensibility. Because of its good mechanical properties，we can place the prefabricated block in the key part of the building component as a monitoring device. In this paper，we used the resin concrete with graphite powder and steel beads to prepare a cube specimen. Then we studied the corresponding relationship between the resistance change and the strain change under the repeated load. The test results show that the specimen has good compression-sensibility. As the loading frequency increased，the sensitivity of the specimen decreased slightly and the overall reproducibility is excellent.
Key words：conductive materials，resin concrete，compression-sensibility，health monitoring