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이예찬(Lee, Yae Chan),김규용(Kim, Gyu Yong),남정수(Nam, Jeong Soo),손민재(Son, Min Jae),편수정(Pyeon, Su Jeong),서동균(Suh, Dong Kyun) 한국콘크리트학회 2021 한국콘크리트학회 학술대회 논문집 Vol.33 No.2
본 연구는 강섬유를 시멘트 복합체에 혼입하여 전도성 네트워크를 형성하고자 하였으며, 이를 기반으로 강섬유 보강 시멘트 복합체의 섬유의 길이, 혼입률 및 재령에 따른 나이퀴스트 선도 거동 및 전기전도도를 비교·분석하는데 목적을 둔다. The purpose of this study is to compare and analyze the nyquist plot behavior and electrical conductivity according to the length, volume fraction of fiber and curing days of the steel fiber-reinforced cementitious composites.
스무스 강섬유 보강 시멘트 복합체의 전기적 특성에 관한 실험적 연구
이예찬(Lee, Yae-Chan),김규용(Kim, Gyu Yong),편수정(Pyeon, Su jeong),서동균(Suh, Dong Kyun),유하민(Eu, Ha Min),남정수(Nam, Jeong Soo) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.2
In the case of a fiber-reinforced cement composite in which conductive fibers are mixed, if AC resistance is measured and expressed in the Nyquist diagram, two cusp corresponding to the composite resistance (Rc) and the matrix resistance (Rm) are generated, and the fiber affects Rc. In this study, AC resistance was measured by containing smooth steel fiber by length and volume fraction. As a result, the longer the length of the fiber and the higher the mixing rate, the lower the resistance was measured. In addition, the shape of the Nyquist diagram was different depending on the curing method, which is believed to have affected the microstructure of the matrix.
강섬유의 길이 및 혼입률에 따른 시멘트 복합체의 전기전도도와 차폐효과의 상관관계
이예찬 ( Lee Yae-chan ),김규용 ( Kim Gyu-yong ),유하민 ( Eu Ha-min ),최병철 ( Choi Byung-cheol ),사수이 ( Sasui Sasui ),남정수 ( Nam Jeong-soo ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.2
The purpose of this study is to compare and analyze the effect of the length and volume fraction of smooth steel fiber on the electrical conductivity and shielding effectiveness of cementitious composites. As the length and volume fraction of the fiber increase, the movement of electrons becomes active and the formation of a conductive path becomes advantageous, thereby increasing electrical conductivity. Accordingly, the electrical conductivity and the shielding effectiveness showed a very close relationship. Thereafter, it is judged that research is needed to increase the shielding effect.
섬유 종류에 따른 섬유 보강 시멘트 복합체의 전기적 특성에 대한 실험적 연구
이예찬 ( Lee Yae-chan ),김규용 ( Kim Gyu-yong ),한승현 ( Han Seung-hyeon ),최윤성 ( Choi Youn-sung ),김문규 ( Kim Moon-kyu ),남정수 ( Nam Jeong-soo ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
The purpose of this study is to compare and analyze the effect of type and volume fraction of fiber on the electrical conductivity and shielding effectiveness of cementitious composites. The large specific surface area of amorphous metallic fiber, as well as the high number of fibers per unit weight, provided an advantage in the formation of conductive path. As the result, the electrical conductivity of amorphous metallic fiber was evaluated to be higher, and the shielding effectiveness was also higher. However, the shielding effectiveness according to electrical conductivity was confirmed to have a threshold point, and further research is needed to improve it.