Comparative study on seismic behavior of corroded RC columns strengthened by ECC combined with steel cage /fiber grid/CFRP
A method for strengthening was proposed to improve the seismic behavior of corroded reinforced concrete (RC) columns by using engineered cementitious composite (ECC) combined with a steel cage/fiber grid/carbon fibre reinforced plastics(CFRP). The corroded RC columns strengthened with ECC combined w...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
Elsevier Ltd
2024
|
| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/42320/ http://umpir.ump.edu.my/id/eprint/42320/1/2024%20Comparative%20study%20on%20seismic%20behavior%20of%20corroded%20RC%20columns.pdf http://umpir.ump.edu.my/id/eprint/42320/7/Comparative%20study%20on%20seismic%20behavior%20of%20corroded%20RC%20columns.pdf |
| _version_ | 1848826580025999360 |
|---|---|
| author | Che, Jialing Liu, Chen Wu, Ping Li, Xinping Liu, Haifeng Doh, Shu Ing |
| author_facet | Che, Jialing Liu, Chen Wu, Ping Li, Xinping Liu, Haifeng Doh, Shu Ing |
| author_sort | Che, Jialing |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | A method for strengthening was proposed to improve the seismic behavior of corroded reinforced concrete (RC) columns by using engineered cementitious composite (ECC) combined with a steel cage/fiber grid/carbon fibre reinforced plastics(CFRP). The corroded RC columns strengthened with ECC combined with a steel cage, fiber grid, and CFRP were subjected to low cyclic compression tests at design axial pressure ratios (n) of 0.3 and compared with corroded and uncorroded columns. Experimental results showed that ECC strengthening of corroded RC columns not only significantly improved their load-carrying capacity, displacement ductility, and energy dissipation capacity but also effectively reduced the degree of damage and stiffness degradation. The ductility coefficients of ECC/steel cage composite strengthened columns and ECC/CFRP composite strengthened columns are 35.58 % and 34.13 % higher, respectively, compared to ECC fully strengthened columns, while the ductility coefficient of ECC/fiber grid composite strengthened columns decreased by 4.33 % compared to ECC fully strengthened columns. Among them, the ECC/steel cage composite-strengthened columns exhibited the highest number of hysteresis loops, the strongest energy dissipation capacity, and the best strengthening effect. Additionally, a restoring force model for ECC-strengthened corroded RC columns was established, and its validity was verified through theoretical calculations. |
| first_indexed | 2025-11-15T03:47:04Z |
| format | Article |
| id | ump-42320 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T03:47:04Z |
| publishDate | 2024 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-423202024-08-13T00:05:17Z http://umpir.ump.edu.my/id/eprint/42320/ Comparative study on seismic behavior of corroded RC columns strengthened by ECC combined with steel cage /fiber grid/CFRP Che, Jialing Liu, Chen Wu, Ping Li, Xinping Liu, Haifeng Doh, Shu Ing TA Engineering (General). Civil engineering (General) A method for strengthening was proposed to improve the seismic behavior of corroded reinforced concrete (RC) columns by using engineered cementitious composite (ECC) combined with a steel cage/fiber grid/carbon fibre reinforced plastics(CFRP). The corroded RC columns strengthened with ECC combined with a steel cage, fiber grid, and CFRP were subjected to low cyclic compression tests at design axial pressure ratios (n) of 0.3 and compared with corroded and uncorroded columns. Experimental results showed that ECC strengthening of corroded RC columns not only significantly improved their load-carrying capacity, displacement ductility, and energy dissipation capacity but also effectively reduced the degree of damage and stiffness degradation. The ductility coefficients of ECC/steel cage composite strengthened columns and ECC/CFRP composite strengthened columns are 35.58 % and 34.13 % higher, respectively, compared to ECC fully strengthened columns, while the ductility coefficient of ECC/fiber grid composite strengthened columns decreased by 4.33 % compared to ECC fully strengthened columns. Among them, the ECC/steel cage composite-strengthened columns exhibited the highest number of hysteresis loops, the strongest energy dissipation capacity, and the best strengthening effect. Additionally, a restoring force model for ECC-strengthened corroded RC columns was established, and its validity was verified through theoretical calculations. Elsevier Ltd 2024 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/42320/1/2024%20Comparative%20study%20on%20seismic%20behavior%20of%20corroded%20RC%20columns.pdf pdf en http://umpir.ump.edu.my/id/eprint/42320/7/Comparative%20study%20on%20seismic%20behavior%20of%20corroded%20RC%20columns.pdf Che, Jialing and Liu, Chen and Wu, Ping and Li, Xinping and Liu, Haifeng and Doh, Shu Ing (2024) Comparative study on seismic behavior of corroded RC columns strengthened by ECC combined with steel cage /fiber grid/CFRP. Structures, 66 (106866). pp. 1-15. ISSN 2352-0124. (Published) https://doi.org/10.1016/j.istruc.2024.106866 10.1016/j.istruc.2024.106866 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Che, Jialing Liu, Chen Wu, Ping Li, Xinping Liu, Haifeng Doh, Shu Ing Comparative study on seismic behavior of corroded RC columns strengthened by ECC combined with steel cage /fiber grid/CFRP |
| title | Comparative study on seismic behavior of corroded RC columns strengthened by ECC combined with steel cage /fiber grid/CFRP |
| title_full | Comparative study on seismic behavior of corroded RC columns strengthened by ECC combined with steel cage /fiber grid/CFRP |
| title_fullStr | Comparative study on seismic behavior of corroded RC columns strengthened by ECC combined with steel cage /fiber grid/CFRP |
| title_full_unstemmed | Comparative study on seismic behavior of corroded RC columns strengthened by ECC combined with steel cage /fiber grid/CFRP |
| title_short | Comparative study on seismic behavior of corroded RC columns strengthened by ECC combined with steel cage /fiber grid/CFRP |
| title_sort | comparative study on seismic behavior of corroded rc columns strengthened by ecc combined with steel cage /fiber grid/cfrp |
| topic | TA Engineering (General). Civil engineering (General) |
| url | http://umpir.ump.edu.my/id/eprint/42320/ http://umpir.ump.edu.my/id/eprint/42320/ http://umpir.ump.edu.my/id/eprint/42320/ http://umpir.ump.edu.my/id/eprint/42320/1/2024%20Comparative%20study%20on%20seismic%20behavior%20of%20corroded%20RC%20columns.pdf http://umpir.ump.edu.my/id/eprint/42320/7/Comparative%20study%20on%20seismic%20behavior%20of%20corroded%20RC%20columns.pdf |