碳纳米管水泥基复合材料压阻效应研究进展  

Research Progress on Piezoresistive Effect of Carbon Nanotube Cement Based Composites

作　　者：秦煜[1,2] 胡魏凯 王威娜 阮鹏臻[1] 唐元鑫 QIN Yu;HU Weikai;WANG Weina;RUAN Pengzhen;TANG Yuanxin(School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;CREEC(Chongqing)Survey,Design and Research Co.Ltd,Chongqing 400023,China)

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]中铁二院重庆勘察设计研究院有限责任公司,重庆400023

出　　处：《硅酸盐学报》2021年第10期2298-2304,共7页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金项目(51978114,52078091);重庆市自然科学基金项目(cstc2019jcyj-msxmX0796,cstc2020jcyj-msxmX0624)。

摘　　要：掺入适量的碳纳米管水泥基材料具有卓越的压阻性能,继而可帮助实现水泥基复合材料结构的自感知。碳纳米管水泥基复合材料的压阻效应受到材料组构和加载模式等因素的影响,然而现存研究对此问题的重视和深度不足,限制了水泥基材料结构智能化的发展。从材料组构和加载模式2个方面,讨论了碳纳米管掺量、水灰比和碳纳米管分散性等因素对材料受外力作用下各个阶段的压阻效应影响,分析了轴压、拉伸、冲击荷载以及加载速率、幅值等影响材料从开始加载至破坏整个过程压阻效应的特征,指出了目前研究中存在的问题,展望了碳纳米管水泥基复合材料压阻效应的未来发展前景。A cement-based material with an appropriate amount of carbon nanotubes has a superior piezoresistive effect,which can realize the self-sensing of cement-based composite structure.The piezoresistive effect of carbon nanotube cement-based composite is affected by the material fabric and loading mode,etc..However,the lack of the corresponding research restricts the development of the intelligent structure of cement-based materials.This review discussed the carbon nanotube content,water cement ratio and carbon nanotube dispersion for the various stages of piezoresistive effect,and analyzed the axial compression,tensile,impact load and impact loading rate,and amplitude..The characteristics of the piezoresistive effect were pointed out,and the existing problems were given.In addition,the future studies on the piezoresistive effect of carbon nanotubes cement matrix composites were also prospected.

关 键 词：碳纳米管 水泥基复合材料 压阻效应 电阻率 

分 类 号：TU528[建筑科学—建筑技术科学]