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Title |
Structural Performance Evaluation of Reinforced Concrete Column Reinforced with Aramid Fibers and PET Fibers
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Authors |
김동환(Dong-Hwan Kim) ; 조민수(Min-Su Jo) ; 최진형(Jin-Hyeung Choi) ; 조우래(Woo-Rae Cho) ; 김길희(Kil-Hee Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.1.78 |
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Keywords |
철근콘크리트 기둥; 아라미드; PET섬유; 하이브리드 섬유시트; 휨거동; 전단거동; 보강 Reinforced concrete column; Aramid; PET fibers; Hybrid sheets; Flexural behaviors; Shear beahaviors; Reinforcement |
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Abstract |
This study evaluates the performance of reinforced concrete columns using hybrid fiber sheets for structural behavior. The purpose of thismethod is to improve the load-bearing capacity of the reinforced structure by impregnating a hybrid fiber sheet, which is woven by arranging aramidand glass fibers uniaxially and attached to an aged concrete structure requiring reinforcement with epoxy. In particular, not only the weight reductionof the material obtained by using a fiber lighter than the steel material, but also the low-strength, high-toughness fiber element among the fibers useddelays the brittle fracture of the high-strength, low-toughness fiber element. The low-strength, high-toughness fiber element among the fibers useddelays the brittle fracture of the high-strength, low-toughness fiber element, resulting in weight reduction compared to steel. The study conductedstructural tests on four specimens, with the hybrid reinforcement method and failure mode as main variables. Specimen size and loading conditionswere chosen to be comparable with previous studies. The structural performance of the specimen was evaluated using energy dissipation capacity andductility. Analysis shows that excellent results can be obtained with the hybrid fiber sheet reinforcement.
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