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Electromagnetic characterization and shielding effectiveness of concrete composite reinforced with carbon nanotubes in the mobile phones frequency band

机译：手机频段碳纳米管增强混凝土复合材料的电磁特性和屏蔽效能

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摘要

The electromagnetic properties of carbon nanotube powder reinforced concretes are numerically and experimentally characterized. This typology of composite material is built by following the simple procedure usually adopted for the on-site concrete production. The dielectric parameters are investigated by means of waveguide measurements in the frequency band 0.75-1.12 GHz that is currently exploited in mobile phone radio access networks. The obtained results are used to compute the electromagnetic shielding effectiveness of large wall-shaped concrete structures. A shielding effectiveness up to 50 dB is obtained for a 15 cm thick wall when the carbon nanotube inclusion is raised up to 3 wt%.
机译：数值和实验表征了碳纳米管粉末增强混凝土的电磁性能。通过遵循通常用于现场混凝土生产的简单程序来构建这种复合材料的类型。介电参数是通过在0.75-1.12 GHz频段内的波导测量进行研究的，该频段目前在手机无线电接入网络中得到了利用。所得结果可用于计算大型墙状混凝土结构的电磁屏蔽效果。当碳纳米管夹杂物提高到3 wt％时，对于15厘米厚的壁可获得高达50 dB的屏蔽效果。

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  • 来源
    《Materials Science and Engineering》 |2014年第10期|119-129|共11页
  • 作者

    D. Micheli; R. Pastore; A. Vricella; R.B. Morles; M. Marchetti; A. Delfini; F. Moglie; V. Mariani Primiani;

  • 作者单位

    'Sapienza' University of Rome, Department of Astronautic, Electric and Energy Engineering (DIAEE), Via Salaria 851, 00184 Rome, Italy;

    'Sapienza' University of Rome, Department of Astronautic, Electric and Energy Engineering (DIAEE), Via Salaria 851, 00184 Rome, Italy;

    'Sapienza' University of Rome, Department of Astronautic, Electric and Energy Engineering (DIAEE), Via Salaria 851, 00184 Rome, Italy;

    'Sapienza' University of Rome, Department of Astronautic, Electric and Energy Engineering (DIAEE), Via Salaria 851, 00184 Rome, Italy;

    'Sapienza' University of Rome, Department of Astronautic, Electric and Energy Engineering (DIAEE), Via Salaria 851, 00184 Rome, Italy;

    'Sapienza' University of Rome, Department of Astronautic, Electric and Energy Engineering (DIAEE), Via Salaria 851, 00184 Rome, Italy;

    Universita Politecnica delle Marche, Department of Information Engineering (DII), Via Brecce Bianche 12, Ancona (Italy);

    Universita Politecnica delle Marche, Department of Information Engineering (DII), Via Brecce Bianche 12, Ancona (Italy);

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Concrete composite; Carbon nanotube; Electromagnetic characterization; Electric permittivity; Finite element method simulation; Shielding effectiveness;

    机译：混凝土复合材料;碳纳米管;电磁特性介电常数有限元法模拟;屏蔽效果;

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