Chemical Industry and Engineering Progress ›› 2021, Vol. 40 ›› Issue (8): 4278-4289.DOI: 10.16085/j.issn.1000-6613.2020-1849

• Materials science and technology • Previous Articles     Next Articles

Progress in multi-scale study on piezoresistive effect of carbon nanotube cement-based composite

QIN Yu1,2(), TANG Yuanxin1, RUAN Pengzhen1, WANG Weina1(), CHEN Bin2   

  1. 1.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
    2.CREEC (Chongqing) Survey, Design and Research Co. , Ltd. , Chongqing 400023, China
  • Received:2020-09-14 Online:2021-08-12 Published:2021-08-05
  • Contact: WANG Weina

碳纳米管水泥基复合材料压阻效应的多尺度研究进展

秦煜1,2(), 唐元鑫1, 阮鹏臻1, 王威娜1(), 陈斌2   

  1. 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
  • 通讯作者: 王威娜
  • 作者简介:秦煜(1983—),男,博士,高级工程师,博士生导师,研究方向为智能材料结构等。E-mail:qinyubridge@163.com
  • 基金资助:
    国家自然科学基金(51978114);重庆市自然科学基金(cstc2019jcyj-msxmX0796)

Abstract:

Carbon nanotube cement-based composites have multi-scale heterogeneity, and its macro-scale performance is the coupling mapping of its low-order nature. Therefore, it is very important to analyze the performance mechanism of carbon nanotube cement-based composites at multi-scale. In this work, the research progress of multi-scale experiment, mechanism and model of piezoresistive effect of carbon nanotube cement-based composites is reviewed from four scales of macro, meso, micro and nano scale. This paper summarizes the limitations or deficiencies of the existing research on aggregate, pore structure, interface transition zone, external environmental factors and theoretical model, and puts forward that the micro nano structure and theoretical model need to be further studied.

Key words: carbon nanotube, cement-based composite, piezoresistive effect, multiscale, resistivity

摘要:

碳纳米管水泥基复合材料具有多尺度的非均一性,其宏观尺度的性能是其各级低阶尺度本质的偶联映射,故而多尺度分析碳纳米管水泥基复合材料性能机理至关重要。本文从宏观、细观、微观和纳观四个尺度,综述了碳纳米管水泥基复合材料压阻效应的多尺度试验、机理和模型等方面的研究进展。总结了现有研究在骨料、孔隙结构、界面过渡区、外部环境因素以及理论模型等方面存在的局限或不足,并提出微纳观结构、理论模型等方面需进一步研究。

关键词: 碳纳米管, 水泥基复合材料, 压阻效应, 多尺度, 电阻率

CLC Number: 

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