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http://dx.doi.org/10.9766/KIMST.2019.22.2.151

Evaluation on High Altitude Electromagnetic Pulse(HEMP) Protection Performance of Carbon Nanotube(CNT) Embedded Ultra-High Performance Concrete(UHPC)  

Jung, Myungjun (Department of Architecture & Architectural Engineering, Seoul National University)
Hong, Sung-gul (Department of Architecture & Architectural Engineering, Seoul National University)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.22, no.2, 2019 , pp. 151-161 More about this Journal
Abstract
In this study, to evaluate the High Altitude Electromagnetic Pulse(HEMP) protection performance of UHPC/CNT composites by the content of Carbon nanotubes(CNTs), Electromagnetic Shielding Effectiveness(SE) test was performed based on MIL-STD-188-125-1. And the results were verified by applying the Antenna theory. In the case of UHPC with a thickness of 200 mm mixed with 1 % CNT of cement weight, the SE was 28.98 dB at 10 kHz and 45.94 dB at 1 GHz. Then the Scabbing limit thickness for bullet proof was computed based on the result of compressive strength test which was 170 MPa, and it was examined whether it satisfied the HEMP protection criteria. As a result, the required HEMP shielding criteria were satisfied in all frequency ranges as well as the scabbing limit thickness was reduced by up to 43 % compared with that of ordinary concrete.
Keywords
High Altitude Electromagnetic Pulse; Ultra-High Performance Concrete; Carbon Nanotube; Shielding Effectiveness; Conductive Concrete;
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