Modeling of conductivity in carbon fiber-reinforced cement-based composite

被引:0
作者
Jing Xu
Wenhui Zhong
Wu Yao
机构
[1] Ministry of Education,Key Laboratory of Advanced Civil Engineering Materials (Tongji University)
来源
Journal of Materials Science | 2010年 / 45卷
关键词
Carbon Fiber; Contact Resistance; Silica Fume; Percolation Threshold; Fiber Volume Fraction;
D O I
暂无
中图分类号
学科分类号
摘要
Carbon fiber-reinforced cement is a multifunctional composite material owing to its conductive behavior. This article presents a model for quantitative analysis of the conductive mechanism. The model is based on the concept that the electronic conduction dominates when the composite is in dry state and is a combination of ohmic continuum conduction and tunnel transmission conduction. Therefore, Ohm’s law and tunneling effect theory are employed in the modeling process. Validity of the model has been confirmed by comparison of the calculated and measured results. Furthermore, the model is applied in simulating the strain sensing characteristics. Numerical results are shown and compared with measured data obtained under compressive loading. The agreement between theoretical and experimental results provides further support to the model.
引用
收藏
页码:3538 / 3546
页数:8
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