Volume 3, Issue 1

    Conductive Concrete for Electromagnetic Shielding Applications

    (Received 8 October 2013; accepted 24 February 2014)

    Published Online: 2014

    CODEN: ACEMOAD

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    Abstract

    Conventional concrete is a dielectric whose properties change based on the constituents of the mixture. Consequently, it is not an effective electromagnetic shield since radio frequency (RF) waves can still propagate through it with relatively low attenuation. Recently, conductive concrete, which is a cement-based mix, was developed to achieve high electrical conductivity and high mechanical strength. Petroleum coke with different particle sizes, synthetic graphite, and steel fibers were used to improve the electrical properties of the concrete. In this paper, the effectiveness of conductive concrete as an electromagnetic shield is investigated. Steel fiber configuration and sample thickness were the parameters used in the evaluation. Frequencies between 0.3 to 11 GHz were considered in the investigation. The free space measurement method was used to measure the electromagnetic shielding effectiveness and the results showed that attenuation up to 50 dB could be achieved for the frequency range considered in the investigation.


    Author Information:

    Yehia, Sherif
    Associate Professor, Department of Civil Engineering, American Univ. of Sharjah, Sharjah,

    Qaddoumi, Nasser
    Professor, Department of Electrical Engineering, American Univ. of Sharjah, Sharjah,

    Hassan, Mohamed
    Associate Professor, Department of Electrical Engineering, American Univ. of Sharjah, Sharjah,

    Swaked, Bassam
    Undergraduate Research Assistant, Department of Electrical Engineering, American Univ. of Sharjah, Sharjah,


    Stock #: ACEM20130107

    ISSN: 2165-3984

    DOI: 10.1520/ACEM20130107

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    Author
    Title Conductive Concrete for Electromagnetic Shielding Applications
    Symposium , 0000-00-00
    Committee C09