| Download | - View final version: Effect of reinforcement corrosion on axial and flexural performance of R.C. columns (PDF, 1.2 MiB)
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| DOI | Resolve DOI: https://doi.org/10.11159/icsect23.117 |
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| Author | Search for: Dabas, Maha1; Search for: Martin-Pérez, Beatriz1; Search for: Almansour, Husham1 |
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| Affiliation | - National Research Council of Canada. Construction
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| Format | Text, Article |
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| Conference | The 8th World Congress on Civil, Structural, and Environmental Engineering, March 29-31, 2023, Lisbon, Portugal |
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| Subject | reinforcement corrosion; residual strength; post-peak response; experimental and analytical investigation |
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| Abstract | Limited research is available on the axial and flexural performance of statically loaded reinforced concrete columns subject to medium and high levels of corrosion. A combined experimental and analytical investigation was developed to evaluate the residual bearing capacity and the post-peak response of corroded columns at different reinforcement corrosion levels and patterns. The analytical approach was established from sectional analysis and numerical analyses of ten reinforced concrete columns that were experimentally tested under quasi-static concentric and eccentric loads. Eight of the columns were subjected to accelerated reinforcement corrosion for 137-days. The mid-section of the columns was subjected to three different patterns of reinforcement corrosion, targeting the dominating reinforcement contributing to peak bearing capacity depending on eccentricity level. Four columns loaded concentrically and eccentrically were corroded at the transverse reinforcement, two columns loaded eccentrically were corroded along the longitudinal reinforcement only, and two columns loaded concentrically were corroded along the transverse and longitudinal reinforcements. Three dimensional finite element analyses were conducted using Diana finite element software to investigate more corrosion scenarios beyond those experimentally tested. The presented approach accounts for material deteriorations (strength, cross-sectional area, bond, and confinement effects) using constitutive models from the literature and incorporates data from the experimental testing. The analytical estimation compared well with experimental and numerical results. The outcome of this investigation emphasizes the importance of incorporating degradations models into evaluation procedures of corroded columns. Results indicate a significant reduction in peak residual strength and ductility at high levels of reinforcement corrosion. Also, local buckling of the longitudinal reinforcement is attributed to loss of core confinement due to tie fracture. |
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| Publication date | 2023-03-29 |
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| Publisher | Avestia Publishing |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 5b42bb63-32d8-4838-acc4-d69df9c1c16e |
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| Record created | 2024-06-18 |
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| Record modified | 2024-06-18 |
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