Investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs: an experimental and analytical study
Corrosion of steel reinforcement significantly reduces the load-carrying capacity of reinforced concrete (RC) flat slabs, making them more vulnerable to punching shear failure. This type of failure can lead to sudden and catastrophic collapse of the structure. Despite its critical implications, rese...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180641 |
| _version_ | 1826110781832298496 |
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| author | Yang, Zhihong Ma, Jiaxing Li, Bing |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Yang, Zhihong Ma, Jiaxing Li, Bing |
| author_sort | Yang, Zhihong |
| collection | NTU |
| description | Corrosion of steel reinforcement significantly reduces the load-carrying capacity of reinforced concrete (RC) flat slabs, making them more vulnerable to punching shear failure. This type of failure can lead to sudden and catastrophic collapse of the structure. Despite its critical implications, research on this topic remains limited, and a mechanical model to estimate the load-displacement behavior of RC flat slabs with corroded reinforcements is currently lacking. In this paper, experimental work on corroded RC slabs under punching shear loading was conducted. To investigate the impact of corrosion on the structural behavior of reinforced concrete (RC) flat slabs, eight specimens, including both corroded and uncorroded controls, were subjected to load testing. The study focused on key performance indicators including punching shear strength, stiffness, crack patterns, failure modes, and energy dissipation capacity. Additionally, an analytical study based on the newly developed Critical Shear Crack Theory (CSCT) was conducted to understand the behavior of corroded RC slabs. Experimental results indicated a significant reduction in the punching shear strength of corroded slabs. Moreover, as corrosion progressed, a notable shift in failure mode from punching shear to flexural failure was observed. The proposed CSCT model demonstrated good agreement between the experimentally obtained and analytically predicted load-displacement curves. |
| first_indexed | 2025-03-09T10:09:11Z |
| format | Journal Article |
| id | ntu-10356/180641 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T10:09:11Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1806412024-10-15T23:48:16Z Investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs: an experimental and analytical study Yang, Zhihong Ma, Jiaxing Li, Bing School of Civil and Environmental Engineering Engineering Corrosion Punching shear failure Corrosion of steel reinforcement significantly reduces the load-carrying capacity of reinforced concrete (RC) flat slabs, making them more vulnerable to punching shear failure. This type of failure can lead to sudden and catastrophic collapse of the structure. Despite its critical implications, research on this topic remains limited, and a mechanical model to estimate the load-displacement behavior of RC flat slabs with corroded reinforcements is currently lacking. In this paper, experimental work on corroded RC slabs under punching shear loading was conducted. To investigate the impact of corrosion on the structural behavior of reinforced concrete (RC) flat slabs, eight specimens, including both corroded and uncorroded controls, were subjected to load testing. The study focused on key performance indicators including punching shear strength, stiffness, crack patterns, failure modes, and energy dissipation capacity. Additionally, an analytical study based on the newly developed Critical Shear Crack Theory (CSCT) was conducted to understand the behavior of corroded RC slabs. Experimental results indicated a significant reduction in the punching shear strength of corroded slabs. Moreover, as corrosion progressed, a notable shift in failure mode from punching shear to flexural failure was observed. The proposed CSCT model demonstrated good agreement between the experimentally obtained and analytically predicted load-displacement curves. The authors gratefully acknowledge the work presented in this paper was supported by the National Natural Science Foundation of China (No. 52108177), International Scientific and Technological Cooperation Program of Ningbo (No. 2023H008), and Key Research and Development Program of Ningbo (No. 2022Z165). 2024-10-15T23:48:16Z 2024-10-15T23:48:16Z 2024 Journal Article Yang, Z., Ma, J. & Li, B. (2024). Investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs: an experimental and analytical study. Engineering Structures, 321, 118983-. https://dx.doi.org/10.1016/j.engstruct.2024.118983 0141-0296 https://hdl.handle.net/10356/180641 10.1016/j.engstruct.2024.118983 2-s2.0-85204179044 321 118983 en Engineering Structures © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. |
| spellingShingle | Engineering Corrosion Punching shear failure Yang, Zhihong Ma, Jiaxing Li, Bing Investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs: an experimental and analytical study |
| title | Investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs: an experimental and analytical study |
| title_full | Investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs: an experimental and analytical study |
| title_fullStr | Investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs: an experimental and analytical study |
| title_full_unstemmed | Investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs: an experimental and analytical study |
| title_short | Investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs: an experimental and analytical study |
| title_sort | investigating the impact of corrosion on behavior and failure modes of reinforced concrete slabs an experimental and analytical study |
| topic | Engineering Corrosion Punching shear failure |
| url | https://hdl.handle.net/10356/180641 |
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