Percolation threshold and piezoresistive behavior of carbon nanotube reinforced cement composite

摘要：

　　Multiwall carbon nanotube(MWCNT)reinforced cement composites(MNTRCs)with varied loadings of MWCNT were fabricated with surfactant ultrasonic dispersion process.DC Wheatstone full & half bridge configurations were simultaneously employed to obtain the electrical resistances,the uniaxial stresses,and the longitudinal strains under compressive loading.The percolation threshold and piezoresistive behaviors under different MWCNTs loading of the MNTRCs were correspondingly studied.Results reveal that,the volume resistivity(ρ)of MNTRC with varied MWCNT loading conforms to percolation threshold,and fraction change in resistivity(Δρ)of MNTRCs with 5wt%MWCNT is almost linearly falls down by increment of stress/strain,respectively,and the strain gauge factor(GF)of the corresponding MNTRC arrives up to 56.0,much higher than common strain gauge.

关键词： Carbon nanotube Multifunctional concrete-based composite Percolation threshold Piezoresistive behavior

作者: Jianlin Luo Chunwei Zhang Zhongdong Duan Qiuyi Li

作者单位: School of Civil Engineering,Qingdao University of Technology,Qingdao,China School of Civil and Environment Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen,China School of Civil Engineering,Qingdao University of Technology,Qingdao,China;School of Architecture En

会议类型: 国际会议

会议名称: The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)

会议地点: 青岛

会议语种:英文

页码: 2670-2678

在线出版日期: 2018-07-22（万方平台首次上网日期，不代表论文的发表时间）