A Review Paper on Various External Strengthening Techniques for Reinforced Concrete Deep Beam with Openings

International Journal of Civil Engineering

© 2025 by SSRG - IJCE Journal

Volume 12 Issue 2

Year of Publication : 2025

Authors : Rakesh Shivaji Mawal, Govardhan Bhatt

10.14445/23488352/IJCE-V12I2P108

How to Cite?

Rakesh Shivaji Mawal, Govardhan Bhatt, "A Review Paper on Various External Strengthening Techniques for Reinforced Concrete Deep Beam with Openings," SSRG International Journal of Civil Engineering, vol. 12,  no. 2, pp. 79-88, 2025. Crossref, https://doi.org/10.14445/23488352/IJCE-V12I2P108

Abstract:

In structural design, deep beams are essential for carrying large loads and preserving overall stability. These days, it is common to find Reinforced Concrete (RC) deep beams constructed with circular or rectangular apertures to pass electrical cables, plumbing pipes, and air conditioning ducts. The beam's stiffness and strength may be diminished due to these openings and increasing deflection and breaking. The opening’s geometric discontinuities cause the nonlinear distribution of stress across the beam’s depth to be disturbed. Numerous researchers have examined how these opening dimensions and shapes affect how deep beams perform structurally. Hence, many researchers use external strengthening techniques to enhance the structural performance of a beam by adding additional reinforcement materials to the outside. This review aims to evaluate the impact of various external strengthening methods like Carbon Fiber Reinforced Polymer (CFRP), galvanized flat and corrugated steel sheets, glass fiber reinforced polymer, and a plate of metals on the deep beams made of RC with openings. Furthermore, recommendations for future research are proposed to fill the gaps observed in the current body of knowledge.

Keywords:

Strengthening, Deep beam with openings, Shear, CFRP, Galvanized steel sheet.

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