Sustainable Retrofitting and Moment Evaluation of Damaged RC Beams Using Ferrocement Composites for Vulnerable Structures

Muthumani Soundararajan, Shanmugam Balaji, Jayaprakash Sridhar and Gobinath Ravindran
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Muthumani Soundararajan: Department of Civil Engineering, Sona College of Technology, Salem 636005, India
Shanmugam Balaji: Department of Civil Engineering, Kongu Engineering College, Perundurai 638060, India
Jayaprakash Sridhar: Department of Civil Engineering, GMR Institute of Technology, Rajam 532127, India
Gobinath Ravindran: Department of Civil Engineering, School of Engineering, SR University, Warangal 506371, India

Sustainability, 2022, vol. 14, issue 15, 1-16

Abstract: Ferrocement composites have uniform distribution and high surface area to volume ratio of reinforcement, which identifies them as a good strengthening material for use in structural applications. Because of these properties, they are considered as a substitution for some conventional structural strengthening methods. In this study, ten reinforced concrete (RC) beams of size 1220 mm × 100 mm × 150 mm were strengthened with ferrocement composites using a galvanized square weld, having volume fractions of 1.76% and 2.35%. For this study, ferrocement composites with mortar 1:2, w/c 0.4, and steel slag, with a 30% weight fraction of fine aggregate, are considered. The experimental results showed that the first crack load and the ultimate load are higher for RC beams strengthened with ferrocement having a volume fraction of 2.35% ( V r ) and a steel slag replacement of 30%. Theoretical predictions were made based on the elastic moment approach; the ratio between the prediction to experimental moment capacity ranges between 0.99 and 1.04. The outcomes show that ferrocement is an effective strengthening technique for deficient reinforced concrete members

Keywords: galvanized square weld mesh; volume fraction; steel slag; flexural strengthening (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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