Examining ACI Development Length and Strength Provisions for RC Slabs Strengthened with NSM GFRP





Reinforced Concrete, One-Way Slabs, Near Surface Mounted, GFRP bars, Repair, Flexural Strengthening


This study aims to investigate the strengthening effect of GFRP bars on the capacity of RC slabs when subject to flexure loading. The objective is to show the effect of debonding failure on the capacity of the GFRP strengthened slabs relative to the different variables used. The variables used are the different bonding lengths, diameters, and numbers of GFRP bars in strengthening RC slabs. The work presents the details of the adopted experimental investigation and the results of the flexural tests performed on twelve slabs with the different variables. These results are adopted to validate the currently available design provisions of the ACI code of practice for using NSM GFRP to strengthen RC slabs.


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Author Biographies

Sama Taha, American University in Cairo

Sama Tarek Taha is a graduate student and a teaching assistant at the American University in Cairo. Sama received her BSc and MSc from the American University in Cairo. Sama’s research interests include the design and behaviour of fiber reinforced concrete.

Mohamed Abou-Zeid, American University in Cairo

Mohamed Nagib Abou-Zeid is a professor of construction at The American University in Cairo. Mohamed received his PhD from the University of Kansas in 1994 with honors. He joined AUC in 1997 as a full-time faculty member. He has held several positions at AUC including the chair of the University Senate, the chair of the Academic Integrity Council and the chair of the Department of Construction and Architectural Engineering. Mohamed’s research interests include a variety of topics in structural engineering.

Ezzeldin Sayed-Ahmed, American University in Cairo

Ezzeldin Yazeed Sayed-Ahmed is a professor and chair of the Department of Construction Engineering at The American University in Cairo. He received his PhD from the University of Calgary. He is a fellow of the Academy of Scientific Research and Technology (ASRT), and a reinforced concrete and steel structures consultant in Egypt. Ezzeldin's research interests include a variety of topics in structural engineering and biomechanics.


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How to Cite

Taha, S., Iskander, G., Abou-Zeid, M. and Sayed-Ahmed, E. (2024) “Examining ACI Development Length and Strength Provisions for RC Slabs Strengthened with NSM GFRP”, Electronic Journal of Structural Engineering, 24(2), pp. 1–5. doi: 10.56748/ejse.24506.