탄소계 산업부산물 활용 고상탄소캡슐을 혼입한 콘크리트의 차폐 성능 평가

초록

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.

키워드