PSI - Issue 70

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ScienceDirect

Procedia Structural Integrity 70 (2025) 533–539

Keywords: Shear; Stirrups; flexural; RCC beams; crack; 1. Introduction In reinforced concrete beams, shear reinforcement is provided to increase the shear capacity of the beam. Shear is the force that acts perpendicular to the longitudinal axis of the beam, trying to cause it to slide or fail diagonally. An experimental study was conducted to investigate the effects of varying the orientation of shear reinforcement in reinforced cement concrete (RCC) beams. The primary objective of the study was to assess the impact of different shear reinforcement configurations on the shear strength and flexural behavior of the beams. The ultimate goal was to reduce the quantity of reinforcement bars used in the concrete beams while maintaining or improving their strength and shear-resisting capacity. In the experimental study, RCC beams were fabricated and subjected to controlled loading conditions to analyze their behavior under shear and flexure. The different shear reinforcement configurations were implemented, and their effects on the shear capacity, flexural capacity, and crack behavior were closely observed and recorded. The study aimed to determine which configuration provided the most efficient shear resistance, particularly in terms of reducing the quantity of steel reinforcement while still meeting the structural requirements of the beam. In addition to the shear behavior, the flexural behavior and crack patterns of the beams were also observed. The study concluded that the configuration of shear reinforcement has a substantial effect on the flexural capacity and crack development in the beams. Beams with inclined shear reinforcement patterns exhibited higher flexural strength and a more controlled cracking behavior compared to beams with single-legged stirrups. The maximum load carrying of 125 kN which is very closed to the load carrying of control beam attained for inclined stirrup beam specimen. Hence, the study suggests that alternative shear reinforcement configurations, particularly inclined systems, could be used to optimize material usage without compromising the strength and performance of RCC beams. © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers Structural Integrity and Interactions of Materials in Civil Engineering Structures (SIIMCES-2025) Investigating the Effectiveness of Different Shear Reinforcement Configurations on the Shear and Flexural Behaviour of RCC Beams Saravanakumar P. a,* , Pon Ilango M. b , Abinaya Ishwarya G. K. b , Sanjay M. a , Ugesh G. a , Pravin S. a a Department of Civil Engineering, Sri Krishna College of Engineering and Technology, Coimbatore, Tamilnadu, India b Department of Civil Engineering, Vels Institute of Science, Technology & Advanced Studies, Pallavaram (VISTAS),, Tamilnadu, India Abstract

* Corresponding author: Tel.: +919500646557

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers 10.1016/j.prostr.2025.07.087