Repair Of Continuous Beams Pre-Damaged By Corrosion In Sagging Regions With C-Frcm Composites
El-Maaddawy, T., elmezayen, Y. (2023). Repair Of Continuous Beams Pre-Damaged By Corrosion In Sagging Regions With C-Frcm Composites. EKB Journal Management System, 07(01), 29-36. doi: 10.21608/asge.2023.218477.1062
Tamer El-Maaddawy; Youssef elmezayen. "Repair Of Continuous Beams Pre-Damaged By Corrosion In Sagging Regions With C-Frcm Composites". EKB Journal Management System, 07, 01, 2023, 29-36. doi: 10.21608/asge.2023.218477.1062
El-Maaddawy, T., elmezayen, Y. (2023). 'Repair Of Continuous Beams Pre-Damaged By Corrosion In Sagging Regions With C-Frcm Composites', EKB Journal Management System, 07(01), pp. 29-36. doi: 10.21608/asge.2023.218477.1062
El-Maaddawy, T., elmezayen, Y. Repair Of Continuous Beams Pre-Damaged By Corrosion In Sagging Regions With C-Frcm Composites. EKB Journal Management System, 2023; 07(01): 29-36. doi: 10.21608/asge.2023.218477.1062

Repair Of Continuous Beams Pre-Damaged By Corrosion In Sagging Regions With C-Frcm Composites

International Journal of Advances in Structural and Geotechnical Engineering
Volume 07, Issue 01, February 2023, Page 29-36  XML PDF (807.12 K)
Document Type: Original Article
DOI: 10.21608/asge.2023.218477.1062
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Authors
Tamer El-Maaddawy email 1; Youssef elmezayen2
1Professor of structural engineering, College of Engineering, United Arab Emirates University, Al Ain, Abu Dhabi.
2College of Engineering, UAE University, UAE
Abstract
Numerical models were developed to simulate the nonlinear structural behavior of flexure-deficient continuous reinforced concrete (RC) beams repaired with carbon fabric-reinforced cementitious matrix (C-FRCM) composites. Laboratory tests of large-scale continuous RC beams were conducted to validate predictions of the numerical models. A parametric study was performed to examine the effect of varying the elastic modulus of the fabric and the bonding condition at the fabric-mortar interface on the flexural response. Predictions of the numerical models were in good agreement with those obtained from the experiments. The difference between the predicted and experimental load capacities was within 10%. Results of the numerical analysis indicated that a 25% corrosion in the middle third of the sagging regions reduced the load capacity by 14%. The C-FRCM repair solution fully restored the original load capacity of the beam model. The use of the design value of the fabric’s elastic modulus rather than the nominal value resulted in a numerical prediction closer to the response obtained from the experiment. The inclusion of a bond-slip law between the fabric and mortar in the numerical analysis was crucial to simulate the behavior of the corroded-repaired beam with good accuracy.
Keywords
Concrete; Corrosion; Flexure; FRCM; Repair
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