Correlation between Electrical Conductivity and Shielding Effectiveness of Cementitous Composites according to Length and Volume Fraction of Steel Fiber

섬유 종류에 따른 섬유 보강 시멘트 복합체의 전기적 특성에 대한 실험적 연구

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.