碳纳米管水泥砂浆压阻效应预测_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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碳纳米管水泥砂浆压阻效应预测

Prediction of Piezoresistive Effect of Carbon Nanotube Reinforced Cement Mortar

2021年第7期

细观力学；碳纳米管；水泥基材料；压阻效应；电导率

Micromechanics; Carbon nanotube; Cement-based material; Piezoresistive effect; Conductivity

2021年第7期

10.19761/j.1000-4637.2021.07.012.05

河南省青年骨干教师项目（2017GGJS119）；广东省汕头大学结构试验室开放基金项目（201803）。

王燕锋1,2, 赵晓华1，边亚东2，赵毅2，王爱勤3

1.汕头大学土木工程系，广东汕头 515063；2.中原工学院建筑工程学院，河南郑州 450007； 3.苏州混凝土水泥制品研究院有限公司，江苏苏州 215004

王燕锋1,2, 赵晓华1，边亚东2，赵毅2，王爱勤3

王燕锋,赵晓华,边亚东,等.碳纳米管水泥砂浆压阻效应预测[J].混凝土与水泥制品,2021(7):12-16.

WANG Y,ZHAO X H,BIAN Y D,et al.Prediction of Piezoresistive Effect of Carbon Nanotube Reinforced Cement Mortar[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):12-16.

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摘要：为了深入探讨碳纳米管水泥砂浆的电导特性，在细观力学的基础上提出了预测碳纳米管水泥基复合材料压阻效应的数学模型。该模型基于Mori-Tanaka方法，考虑碳纳米管之间的隧穿电导，可求出碳纳米管复合水泥基体的有效电导；此外，还考虑了应变作用下孔隙水离子电导随空隙连通性变化对碳纳米管水泥基复合材料压阻效应的影响，根据试验结果拟合出相关预测参数。结果表明：考虑离子电导的影响，根据提出的预测模型求出的压阻效应预测值与试验结果符合较好。 Abstract: In order to study the electrical conductivity of multi-walled carbon nanotubes (MWCNTs) reinforced cement-based materials, a mathematical model for predicting the piezoresistive effect of MWCNTs reinforced cement-based materials was proposed on the basis of micromechanics. Based on Mori Tanaka method and considering the tunneling conductivity between carbon nanotubes, the effective conductivity of MWCNTs reinforced cement matrix could be calculated. In addition, the influence of ionic conductivity of pore water on piezoresistive effect of MWCNTs reinforced cement-based materials under strain was also considered. According to the test results, the relevant prediction formula was fitted. The results show that considering the influence of ionic conductivity, the prediction results of piezoresistive effect given by the prediction model are in good agreement with the experimental results.

英文名 : Prediction of Piezoresistive Effect of Carbon Nanotube Reinforced Cement Mortar

刊期 : 2021年第7期

关键词 : 细观力学；碳纳米管；水泥基材料；压阻效应；电导率

Key words : Micromechanics; Carbon nanotube; Cement-based material; Piezoresistive effect; Conductivity

刊期 : 2021年第7期

DOI : 10.19761/j.1000-4637.2021.07.012.05

文章编号 :

基金项目 : 河南省青年骨干教师项目（2017GGJS119）；广东省汕头大学结构试验室开放基金项目（201803）。

作者 : 王燕锋1,2, 赵晓华1，边亚东2，赵毅2，王爱勤3

单位 : 1.汕头大学土木工程系，广东汕头 515063；2.中原工学院建筑工程学院，河南郑州 450007； 3.苏州混凝土水泥制品研究院有限公司，江苏苏州 215004

王燕锋1,2, 赵晓华1，边亚东2，赵毅2，王爱勤3

王燕锋,赵晓华,边亚东,等.碳纳米管水泥砂浆压阻效应预测[J].混凝土与水泥制品,2021(7):12-16.

WANG Y,ZHAO X H,BIAN Y D,et al.Prediction of Piezoresistive Effect of Carbon Nanotube Reinforced Cement Mortar[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):12-16.

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摘要

参数

结论

参考文献

引用本文

Abstract: In order to study the electrical conductivity of multi-walled carbon nanotubes (MWCNTs) reinforced cement-based materials, a mathematical model for predicting the piezoresistive effect of MWCNTs reinforced cement-based materials was proposed on the basis of micromechanics. Based on Mori Tanaka method and considering the tunneling conductivity between carbon nanotubes, the effective conductivity of MWCNTs reinforced cement matrix could be calculated. In addition, the influence of ionic conductivity of pore water on piezoresistive effect of MWCNTs reinforced cement-based materials under strain was also considered. According to the test results, the relevant prediction formula was fitted. The results show that considering the influence of ionic conductivity, the prediction results of piezoresistive effect given by the prediction model are in good agreement with the experimental results.

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