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Title |
Fracture Energy Evaluation Model of Concrete Flexural Specimens with Steel Fibers Aligned by Electromagnetic Forces
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Authors |
문도영(Do Young Moon) ; 이강진(Kang Jin Lee) |
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DOI |
https://doi.org/10.4334/JKCI.2025.37.2.237 |
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Keywords |
강섬유보강콘크리트; 전자기장; 파괴에너지; 유효강섬유보강비; 섬유분포 및 방향 SFRC; electromagnetic field; fracture energy; effective steel fiber reinforcement ratio; fiber distribution and orientation |
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Abstract |
In this study, the effect of forced alignment of steel fibers using an electromagnetic field on the distributioncoefficient, orientation coefficient, and fracture energy was analyzed through a three-point bending test. Flexural specimens withsteel fibers aligned under an electromagnetic field, varying in volume fraction and aspect ratio, were fabricated and tested alongsidecontrol specimens cast without electromagnetic exposure. Experimental results indicated that while the electromagnetic field hadminimal influence on the distribution of steel fibers, it significantly affected their orientation. It was observed that steel fibers alignedperpendicular to the fracture plane contributed to an increase in fracture energy. Based on the analysis of the effective steel fiberreinforcement ratio and fracture energy, a trend analysis was conducted, and an equation was proposed to evaluate the fracture energyof steel fiber-reinforced flexural specimens with aligned fibers subjected to an electromagnetic field.
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