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Title |
Evaluation of How the Amount of Transverse Reinforcement Affects the Axial Performance of Lightweight Aggregate Concrete Columns
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Authors |
왕혜린(Hye-Rin Wang) ; 양근혁(Keun-Hyeok Yang) ; 문주현(Ju-Hyun Mun) |
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DOI |
https://doi.org/10.4334/JKCI.2022.34.6.587 |
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Keywords |
기둥; 경량골재 콘크리트; 압축연성; 구속된 콘크리트; 횡보강근 column; lightweight aggregate concrete; axial ductility; confined concrete; transverse reinforcement |
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Abstract |
The objective of this study is to examine the reliability of the minimum amount of transverse reinforcements () specified in ACI 318-19 needed to enhance the compressive ductility of lightweight aggregate concrete (LWAC) columns. The main parameters investigated were the type of concrete and the amount of transverse reinforcement. The axial compression tests showed that LWAC columns commonly exhibited a more brittle failure mode than the counterpart normal-weight concrete (NWC) columns. The compressive ductility ratio and strength gain factor of the LWAC column with 1.0 were 27.9 % and 43.3 %, respectively, lower than those of the NWC columns. To obtain a similar compressive response in both the NWC and LWAC columns, approximately 1.2~1.3 is required to provide the LWAC columns with a reliable confinement.
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