https://iaeme.com/Home/journal/IJCIET 58 [email protected] International Journal of Civil Engineering and Technology (IJCIET) Volume 11, Issue 10, October 2020, pp. 58-73, Article ID: IJCIET_11_10_007 Available online at https://iaeme.com/Home/issue/IJCIET?Volume=11&Issue=10 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 DOI: https://doi.org/10.34218/IJCIET.11.10.2020.007 © IAEME Publication Scope Database Indexed REPAIR OF RC BEAMS WITH OPENINGS SUBJECTED TO TORSION USING STEEL PLATES Ahmed Rashad Shalaby * PHD. Student, Structural Engineering Department, Cairo University, Giza, Egypt Ghada Diaa Professor, Housing and Building National Research Center, Egypt Hany Abdalla Professor of Concrete Structures, Cairo University, Giza, Egypt *Corresponding Author ABSTRACT This paper presents the results of an experimental investigation on the behavior of RC beams with openings repaired by steel plates and subjected to pure torsion. The experimental study includes testing of seven RC beams divided into three groups. The parameters considered in this study include the steel plates configuration, opening width and steel plate thickness. The experimental work consists of one solid specimen, four specimens with openings of 300 x 150 mm and two specimens with openings of 500 x 150 mm. The results of the tested beams include cracking and ultimate torques, angle of rotation, toughness, and mode of failure. A cost effectiveness study was performed to compare the different repair configurations used in this research. The experimental results showed that using full steel plates in repairing beams with opening significantly improved the ultimate torsional capacity of such beams. Keywords: RC beams; Repairing; Opening; Steel plates; Torque Cite this Article: Ahmed Rashad Shalaby, Ghada Diaa and Hany Abdalla, Repair of Rc Beams with Openings Subjected to Torsion Using Steel Plates, International Journal of Civil Engineering and Technology, 11(10), 2020, pp. 58-73. https://iaeme.com/Home/issue/IJCIET?Volume=11&Issue=10 1. INTRODUCTION In the last decades, the torsional moment was considered to have a minor effect on the different structural elements, and most of design engineers ignored it. As a result of that, they increased safety factors by depending on conservative flexural design and on the stirrups provided for the
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