Evaluation of Electromagnetic Pulse Shielding Performance of Carbon Fiber-Mixed Cement Paste

Autor: Tae-Beom Min, Hyeong-Kyu Cho
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: International Journal of Concrete Structures and Materials, Vol 16, Iss 1, Pp 1-7 (2022)
Druh dokumentu: article
ISSN: 1976-0485
2234-1315
DOI: 10.1186/s40069-022-00500-4
Popis: Abstract This study investigated the physical properties and electromagnetic pulse (EMP) shielding performance of cement paste containing small-diameter carbon fibers to develop an EMP-shielding cement. Small-diameter carbon fibers were used as a cement admixture because the powders were approximately 100 μm in length and were visually powder-shaped. As a result of the experiment, it was indicated that ordinary Portland cement do not have shielding performance. However, cement paste with 5% carbon fibers showed effectiveness in compressive strength and EMP shielding. However, the shielding performance did not increase when the cement contained more than 5% carbon fibers. Furthermore, a review of the EMP shielding performance relative to the thickness of the specimen showed that the plain cement without small-diameter carbon fibers did not increase the shielding performance with an increase in thickness, but the shielding performance of the specimens with small-diameter carbon fibers increased with an increase in thickness. Therefore, it was more effective to increase the thickness of the cement containing 5% carbon fibers rather than increasing the carbon fiber content.
Databáze: Directory of Open Access Journals
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