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Effect of Main and NSM Reinforcing Materials on the Behavior of the Shear Strengthened RC Beams with NSM Reinforced HSC Layers and Bars
Faculty
Engineering
Year:
2023
Type of Publication:
ZU Hosted
Pages:
21
Authors:
Ayman Abdo Mohamed Hessein
Staff Zu Site
Abstract In Staff Site
Journal:
Case Studies in Construction Materials elsevier
Volume:
Keywords :
Effect , Main , , Reinforcing Materials , , Behavior , , Shear
Abstract:
It became common practice to utilize near-surface mounted (NSM) bars to improve the shear capacity of steel-reinforced concrete (RC) beams. Consequently, carbon fiber-reinforced polymer (FRP) is usually used to improve RC beams' shear performance. Conversely, the use of Glass FRP (GFRP) for enhancing the shear behavior of the steel-RC and GFRP-RC beams is still limited. This study used NSM GFRP or steel bars to strengthen RC beams reinforced in tension with steel or GFRP bars. In addition, a new NSM technique was conducted using high-strength concrete (HSC) layers reinforced with GFRP or steel bars bonded within grooves to enhance beams' shear capacity. The results of seventeen beams used in the tests showed that NSM HSC layers improved the shear performance of RC beams more than NSM bars. Also, the beams reinforced in tension with steel bars had higher shear efficiency and were stiffer than those reinforced with GFRP bars. Conversely, the shear efficiency of steel RC beams strengthened in shear with internal stirrups or NSM reinforcement (or both) increased by 142.8–211.7% compared to GFRP RC beams without internal and NSM shear reinforcement. Conversely, the shear capacity of the steel-RC beams strengthened in shear with internal stirrups or NSM reinforcement (or both) increased by 153.5-279.9% compared to the corresponding beam without GFRP RC beam without internal and NSM shear reinforcement. The numerical analysis using the ABAQUS program showed great effects of the tension reinforcement and the NSM materials on the strain of longitudinal bars, stirrups and NSM reinforcement.
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Department Related Publications
Eshak Ibrahiem Eshak Hana, "Effect of Temperature Variation on Bridges due to Locking of Movable Bearings and Expansion Joints", 1st Eng. Conference, Engineering Between Theory and Practice, Assuit Univ., Faculty of Eng., Egypt, 7-8 May 2007., 2007
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Eshak Ibrahiem Eshak Hana, "An Iterative Procedure for Elastic Stability of Thin Plates", Cairo University, 1981
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Eshak Ibrahiem Eshak Hana, "Computer Aided Limit-State Design of Core Structures Subjected to Axial Load, Biaxial Bending and Torsional Moments", Proceedings of the 4th Arab Structural Eng. Conference, Vol.3, Cairo Univ., Nov. 1991., 1991
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Eshak Ibrahiem Eshak Hana, "A Technical Report on the Use of Concrete Hinged Bearings in Bridge Construction", Bridge Engineering Conference 2000, Vol.1, Sharm El-Sheikh, Sinai, Egypt, 2000
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