Axial compression performance of coral concrete-filled aluminium tube (CCFAT) square stub columns
Coral materials have been used as concrete aggregate for decades to achieve self-sufficiency of materials and reduce costs of island construction. Considering the aggressive environment of islands, filling concrete into steel tube to produce coral concrete-filled steel tube (CCFST) columns is imprac...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509521002126 |
| _version_ | 1818425171923435520 |
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| author | Zhiheng Deng Jianhua Guo Junjie Yu Bing Liu |
| author_facet | Zhiheng Deng Jianhua Guo Junjie Yu Bing Liu |
| author_sort | Zhiheng Deng |
| collection | DOAJ |
| description | Coral materials have been used as concrete aggregate for decades to achieve self-sufficiency of materials and reduce costs of island construction. Considering the aggressive environment of islands, filling concrete into steel tube to produce coral concrete-filled steel tube (CCFST) columns is impractical. The combination of concrete and aluminium tube is proposed to avoid steel corrosion and optimize concrete performance in island construction. This study experimentally investigated the axial compression performance of nine coral concrete-filled aluminium tube (CCFAT) square stub columns. The failure mode, load-carrying capacity, and load-deformation relations were obtained, and the effects of concrete strength (fc), aluminium ratio (α), and confinement factor (ξ) on the strength, stiffness, and ductility performance were discussed. Moreover, the adaptability of concrete-filled steel tube (CFST) design codes in the load-carrying capacity prediction of CCFAT square stub columns was assessed. The results show that the increase in α mostly improves the strength index (SI) and stiffness index (KI) while the effects of fc is less significant. The ductility index (DI) and composite action are closely correlated to ξ. Using the design equation in AIJ code to predict the load-carrying capacity of CCFAT square stub columns is acceptable. |
| first_indexed | 2024-12-14T14:09:42Z |
| format | Article |
| id | doaj.art-4ffac402729542d2be4e556c7150ed76 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-12-14T14:09:42Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-4ffac402729542d2be4e556c7150ed762022-12-21T22:58:19ZengElsevierCase Studies in Construction Materials2214-50952021-12-0115e00697Axial compression performance of coral concrete-filled aluminium tube (CCFAT) square stub columnsZhiheng Deng0Jianhua Guo1Junjie Yu2Bing Liu3College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; Key Laboratory of Disaster Prevention and Structural Safety (Ministry of Education), Guangxi University, Nanning 530004, ChinaCollege of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; Key Laboratory of Disaster Prevention and Structural Safety (Ministry of Education), Guangxi University, Nanning 530004, ChinaCollege of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; Greenland Hongkai Real Estate Co., Ltd, Nanning 530201, ChinaCollege of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, China; Corresponding author at: College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China.Coral materials have been used as concrete aggregate for decades to achieve self-sufficiency of materials and reduce costs of island construction. Considering the aggressive environment of islands, filling concrete into steel tube to produce coral concrete-filled steel tube (CCFST) columns is impractical. The combination of concrete and aluminium tube is proposed to avoid steel corrosion and optimize concrete performance in island construction. This study experimentally investigated the axial compression performance of nine coral concrete-filled aluminium tube (CCFAT) square stub columns. The failure mode, load-carrying capacity, and load-deformation relations were obtained, and the effects of concrete strength (fc), aluminium ratio (α), and confinement factor (ξ) on the strength, stiffness, and ductility performance were discussed. Moreover, the adaptability of concrete-filled steel tube (CFST) design codes in the load-carrying capacity prediction of CCFAT square stub columns was assessed. The results show that the increase in α mostly improves the strength index (SI) and stiffness index (KI) while the effects of fc is less significant. The ductility index (DI) and composite action are closely correlated to ξ. Using the design equation in AIJ code to predict the load-carrying capacity of CCFAT square stub columns is acceptable.http://www.sciencedirect.com/science/article/pii/S2214509521002126Coral concrete-filled aluminium tube (CCFAT)Stub columnAxial compressionConfinement factorLoad-carrying capacity |
| spellingShingle | Zhiheng Deng Jianhua Guo Junjie Yu Bing Liu Axial compression performance of coral concrete-filled aluminium tube (CCFAT) square stub columns Case Studies in Construction Materials Coral concrete-filled aluminium tube (CCFAT) Stub column Axial compression Confinement factor Load-carrying capacity |
| title | Axial compression performance of coral concrete-filled aluminium tube (CCFAT) square stub columns |
| title_full | Axial compression performance of coral concrete-filled aluminium tube (CCFAT) square stub columns |
| title_fullStr | Axial compression performance of coral concrete-filled aluminium tube (CCFAT) square stub columns |
| title_full_unstemmed | Axial compression performance of coral concrete-filled aluminium tube (CCFAT) square stub columns |
| title_short | Axial compression performance of coral concrete-filled aluminium tube (CCFAT) square stub columns |
| title_sort | axial compression performance of coral concrete filled aluminium tube ccfat square stub columns |
| topic | Coral concrete-filled aluminium tube (CCFAT) Stub column Axial compression Confinement factor Load-carrying capacity |
| url | http://www.sciencedirect.com/science/article/pii/S2214509521002126 |
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