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Title |
Electromagnetic Shielding Performance of Concrete Blended with Solid-State Carbon Capsules Using Carbon-Based By-Products
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Authors |
구현철(Hyun-Chul Koo) ; 이윤우(Yun-Wu Lee) ; 이재훈(Jae-Hun Lee) ; 조형규(Hyeong-Kyu Cho) |
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DOI |
https://doi.org/10.4334/JKCI.2025.37.2.187 |
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Keywords |
고상탄소캡슐; 발열; 전자파 차폐 solid-state carbon capsules; heating; electromagnetic shield |
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Abstract |
The demand for electromagnetic shielding has recently increased in specific domains, such as in military facilities,power transmission, and hospitals. To address this need, while promoting by-product recycling and cost efficiency, this studydeveloped a solid-state carbon capsule to enhance dispersibility in concrete. The capsule was produced using carbon-basedby-products, such as carbon nanotubes (CNTs) and cathode materials generated in the lithium secondary battery industry. Theheating performance of mortar blended with solid-state carbon capsules was evaluated, revealing that when 23 % of the capsuleswere incorporated, the surface temperature rose by more than 60 °C within 20 minutes and by 30 °C within about 16 minutes frominitial temperature. This indicated the formation of an effective electrical network. Through the electromagnetic shieldingperformance tests of concrete blended with solid-state carbon capsules, it was found that the electromagnetic shielding performanceimproved as the proportion of solid-state carbon capsules increased. Notably, when 30 % of the capsules were incorporated, theshielding effectiveness exceeded 60 dB.
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