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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.79 No.4
- 발행연도
- 2021.8
- 수록면
- 451 - 472 (22page)
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초록· 키워드
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To study the axial compression behavior of carbon fiber reinforced plastics (CFRP) confined steel reinforced recycled concrete (CSRRC) columns, 11 specimens of CSRRC columns were manufactured and tested under axial compression loading. The design variables in the experiments included the replacement percentage of recycled coarse aggregate (RCA), layers of CFRP, strength of recycled aggregate concrete (RAC), profile steel ratio and slenderness ratio. Subsequently, the failure process and modes, load-displacement curves, stress-strain curves, transverse deformation coefficient and stiffness degradation of the specimens were obtained and analyzed in detail. The experimental results showed that the profile steel yielded before the steel rebars in the columns, then the RAC was crushed, and finally the CFRP broke under axial compression loading. The axial bearing capacity of CSRRC columns decreased with the increase of replacement percentage of RCA and slenderness ratio, respectively. However, the CFRP can give full play to its high-strength confinement performance and effectively improve the axial bearing capacity and deformability of columns. Moreover, the profile steel ratio and strength of RAC have significant effects on the initial stiffness of CSRRC columns, and the stiffness degradation rate of columns decreases with the increase of these parameters. Overall, the CSRRC columns exhibit high axial bearing capacity and good ductility deformation ability. Based on ACI 440.2R-08, the modified formula on the nominal axial bearing capacity of CSRRC columns was proposed in this study.
The accuracy on the modified formulae was evaluated by the comparison between the calculated values and test values.
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참고문헌 (34)
참고문헌 신청
Akhtar, A. / 2018 / Construction and demolition waste generation and properties of recycled aggregate concrete : A global perspective / J. Clean Prod 186(6):262~281
Belouar, A. / 2013 / Structural performance of square concrete columns wrapped with CFRP sheets / Procedia Eng 54(6):232~240
Cardoso, R. / 2016 / Use of recycled aggregates from construction and demolition waste in geotechnical applications : A literature review / Waste Manage 49(3):131~145
Chen, G. M. / 2016 / Behavior of CFRP-confined recycled aggregate concrete under axial compression / Constr. Build. Mater 111(5):85~97
Chen, J. / 2020 / Axial compressive behavior of recycled concrete filled steel tubular stub columns with the inclusion of crushed brick / Struct 26(8):271~283
Belouar, A. / 2013 / Structural performance of square concrete columns wrapped with CFRP sheets / Procedia Eng 54(6):232~240
Cardoso, R. / 2016 / Use of recycled aggregates from construction and demolition waste in geotechnical applications : A literature review / Waste Manage 49(3):131~145
Chen, G. M. / 2016 / Behavior of CFRP-confined recycled aggregate concrete under axial compression / Constr. Build. Mater 111(5):85~97
Chen, J. / 2020 / Axial compressive behavior of recycled concrete filled steel tubular stub columns with the inclusion of crushed brick / Struct 26(8):271~283
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