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Title |
Experimental Investigation on Seismic Performance of RC Circular Columns Strengthened Using Highly-Ductile PET-AF Fiber Strand
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Authors |
곰보수렌 진저릭트(Gombosuren Chinzorigt) ; 김소영(So-Young Kim) ; 최동욱(Donguk Choi) ; 임명관(Myung-Kwan Lim) ; 이진용(Chin-Yong Lee) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.5.056 |
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Keywords |
RC 원형 기둥 ; 내진 보강 성능 ; 휨 강도 ; 연성 ; PET ; HF 스트랜드 RC circular columns ; Seismic strengthening performance ; Flexural strength ; Ductility capacity ; PET ; HF strand |
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Abstract |
In this study, seismic strengthening performance of RC circular columns reinforced with high ductile PET and hybridized fibers(HF, PET + aramid) strand was experimentally compared and investigated. As a result, the maximum flexural strength and ductility capacity of all reinforced columns were improved than control column and fiber rupture did not occur at the ultimate stage. In addition, the resistive strength and displacement of the PET sheet 25 layers reinforcing column and the HF strand 1 layer reinforcing column were almost similar, so that 1 layer of HF strand showed the same lateral confinement effect as the PET sheet 25 layers. As a result of this experimental study, PET is considered to be suitable as seismic reinforcement material for RC structures in terms of flexural strength and ductility. However, in order to increase the possibility of application in the field, it is necessary to use a prefabricated PET sheet such as HF used in this study. The durability of PET needs investigation in the future.
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