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首页> 外文期刊>IEEE sensors journal >Monitoring of Compression and Bending Process of Reactive Powder Concrete Using MWCNTs/PDMS Composite Sensors
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Monitoring of Compression and Bending Process of Reactive Powder Concrete Using MWCNTs/PDMS Composite Sensors

机译：MWCNTs / PDMS复合传感器监测活性粉末混凝土的压缩和弯曲过程

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摘要

In the structural healthy monitoring of bridges, pavements of concrete or asphalt, flexible conductive sensors exhibit so many advantages, such as low cost, high durability, and large deformation monitoring. Herein, we report a low cost flexible composite sensor of multi-walled carbon nanotubes/Polydimethylsilosane (MWCNTs/PDMS) nanocomposites via solution casting method. Results show that MWCNTs/PDMS reveals excellent sensitivity and good stability when the fraction of MWCNTs is larger than the threshold (~2.5 wt%). The compressive strain of reactive powder concrete was lineal with the resistance change of sensor ( in the range of elastic deformation, while the deflection of reactive powder concrete could be predicted by the fitting exponential equation from the electric resistance change of MWCNTs/PDMS. These results highlight MWCNTs/PDMS nanocomposite as strain sensor in the structural health monitoring of reactive powder concrete structures.
机译：在桥梁，混凝土或沥青路面的结构健康监测中，柔性导电传感器具有许多优点，例如低成本，高耐久性和大变形监测。在这里，我们通过溶液浇铸方法报告了一种低成本的柔性多壁碳纳米管/聚二甲基硅烷（MWCNTs / PDMS）纳米复合材料的复合传感器。结果表明，当MWCNT的比例大于阈值（〜2.5 wt％）时，MWCNTs / PDMS表现出出色的灵敏度和良好的稳定性。反应性粉末混凝土的压缩应变与传感器的电阻变化（在弹性变形范围内）呈线性关系，而反应性粉末混凝土的挠度可以通过MWCNTs / PDMS的电阻变化拟合指数方程来预测。突出显示MWCNTs / PDMS纳米复合材料作为应变传感器，用于反应性粉末混凝土结构的结构健康监测。

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  • 来源
    《IEEE sensors journal》 |2017年第19期|6153-6159|共7页
  • 作者

    Yongquan Zhang; Yong Ge; Yuanbo Du; Lili Yang;

  • 作者单位

    School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China;

    School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China;

    School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China;

    College of Materials Science and Engineering, Donghua University, Shanghai, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Nanocomposites; Concrete; Powders; Resistance; Strain; Sensors; Loading;

    机译：纳米复合材料;混凝土;粉末;电阻;应变;传感器;载荷;

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