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http://dx.doi.org/10.5345/JKIBC.2021.21.6.519

An Experimental Study to Secure Electromagnetic Pulse Shielding Performance of Concrete Coated by an Arc Metal Spraying Process  

Jang, Jong-Min (Department of Smart-city Engineering, Hanyang University)
Jeong, Hwa-Rang (Department of Architectural Engineering, Daegu Catholic University)
Lee, Han-Seung (Department of Architectural Engineering, Hanyang University)
Publication Information
Journal of the Korea Institute of Building Construction / v.21, no.6, 2021 , pp. 519-527 More about this Journal
Abstract
In this study, an electromagnetic pulse shielding effect was obtained by applying the arc metal spraying method to the ordinary concrete. For this study, to evaluate the electrical properties in the thickness of the metal sprayed coating, 8 types of metals(Cu, CuAl, CuNi, CuZn, Al, Zn, ZnAl, AlMg) were sprayed as coatings with a thickness of 100, 200 and 500㎛. The electrical conductivity on the surface was measured with a 4-pin probe, and an electromagnetic wave shielding effect test was performed according to KS. Based on the test results, 200 ㎛ was proposed as an optimal metal coating thickness for electromagnetic pulse shielding, and it was thermally sprayed on a 300×300×100mm concrete specimen to analyze the electromagnetic wave shielding performance. However, in the area of adhesion strength, the maximum was 1.11MPa, which was found to be less than 74% of the target performance.
Keywords
metal sprayed coating; conductivity; electromagnetic pulse shielding; bonding strength;
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