Journal of Polymer & Composites Original Research Special issue Open Access
Retrofitting of RC Beams Using FRP and FRCM
Abstract
The deterioration of reinforced concrete (RC) structures due to various factors such as aging, aggressive environments, or increased loads poses significant challenges to structural integrity and safety. Retrofitting techniques have emerged as effective solutions to enhance the structural performance of existing RC members. Among the retrofitting options, the use of Fibre Reinforced Polymer (FRP) and Fibre Reinforced Cementitious Matrix (FRCM) systems have gained considerable attention in recent years. The study encompasses a comprehensive review of the underlying principles, design considerations, and implementation techniques associated with these retrofitting methods. The work presents experimental investigations that demonstrate the successful application of FRP and FRCM retrofitting techniques in strengthening RC beams. This report summarizes the outcomes of these studies, including the enhanced load carrying capacity, increased stiffness, and improved ductility achieved through the retrofitting process.Keywords
References (12)
- Georges El-Saikaly., Ahmed Godat., and Omar Chaallal M., “New Anchorage Technique for FRP Shear-Strengthened RC T-Beams Using CFRP Rope”, Journal of Composites for Construction., ASCE, Vol.19, Issue 4, September 2014, doi: 1061/ (ASCE)CC.1943-5614.0000530
- Pei-Ching Chen., Min-Lang Lin., and Jhih-Hao Huang., “Seismic retrofit of rectangular RC beams using CFRP wrapping and CFRP anchors”, January 2010 https://www.researchgate.net/publication/268290830
- Ameli M, Ronagh HR, Dux PF. Behavior of FRP Strengthened Reinforced Concrete Beams under Torsion. Journal of Composites for Construction. 2007;11(2):192-200. doi:10.1061/(asce)1090-0268(2007)11:2(192)
- Ebead U, Shrestha KC, Afzal MS, El Refai A, Nanni A. Effectiveness of Fabric-Reinforced Cementitious Matrix in Strengthening Reinforced Concrete Beams. Journal of Composites for Construction. 2017;21(2). doi:10.1061/(asce)cc.1943-5614.0000741
- Azam R, Soudki K. FRCM Strengthening of Shear-Critical RC Beams. Journal of Composites for Construction. 2014;18(5). doi:10.1061/(asce)cc.1943-5614.0000464
- Ombres L. Analysis of the bond between Fabric Reinforced Cementitious Mortar (FRCM) strengthening systems and concrete. Composites Part B: Engineering. 2015;69:418-426. doi:10.1016/j.compositesb.2014.10.027
- Arslan MH, Yazman Ş, Hamad AA, Aksoylu C, Özkılıç YO, Gemi L. Shear strengthening of reinforced concrete T-beams with anchored and non-anchored CFRP fabrics. Structures. 2022;39:527-542. doi:10.1016/j.istruc.2022.03.046
- Brückner A, Ortlepp R, Curbach M. Anchoring of shear strengthening for T-beams made of textile reinforced concrete (TRC). Materials and Structures. 2007;41(2):407-418. doi:10.1617/s11527-007-9254-9
- IS 456 : 2000, “Plain and Reinforced Concrete – Code of Practice (Fourth Revision)”, Bureau of Indian Standards, New Delhi
- IS 383 : 2016, “Coarse and Fine Aggregate for Concrete – Specification (Third Revision)”, Bureau of Indian Standards, New Delhi
- IS 2386 – 3 (1963), “Methods of test for aggregates for concrete, Part 3 : Specific gravity, density, voids, absorption and bulking (Eighth Reprint, March 1997)”, Bureau of Indian Standards, New Delhi
- IS 10262 : 2019, “Concrete Mix Proportioning – Guidelines (Second Revision)”, Bureau of Indian Standards, New Delhi