Oral Presentation

Volume Title: ICCE2021 Vol. 2

¹mohamed nagah noureldin ; ¹Ahmed Attya Drar; ¹Ahmed Noureldin Arafa; ²Yehia Abdel Azim Hassanean

¹civil engineering department, faculty of engineering, sohag university, sohag, Egypt

²Civil Department, Faculty of engineering, Assiut University

Due to the drawbacks of externally bonded system which consists of epoxy and FRP sheets, fabric-reinforced cementitious matrix (FRCM) materials overcome some hazard limitations of organic resins and become a competitive technology in strengthening reinforced concrete structures. The FRCM layers consist of fabric mesh embedded in an inorganic stabilized cementitious mortar. Many experimental studies examined the impact of strengthening of RC beams by using FRCM layers, but the numerical investigations are still limited. So, the main objective of this paper is introducing a numerical study of the flexural behavior of RC beams strengthened by FRCM layers. To reach this main goal, this paper proposed a numerical analysis to verify the FEM results with the experimental results in the previous studies. Also, a parametric study on large- scale beams was performed. The investigated beams in this work have different reinforcement ratios. Moreover, this work is focused on the strengthening effect of the FRCM system on the flexural behaviour of reinforced concrete beams in terms of ultimate capacity, deflections, and ductility. The numerical validation showed a good agreement with the experimental results. Also, the results indicated that using P-Phenylene Benzobis Oxazole (PBO-FRCM) system is more significant in case of beams with lower reinforcement ratio than that with higher reinforcement ratio.

Externally bonded system (FRP); Fabric-reinforced cementitious matrix (FRCM); FEM