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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Strengthening of RC T-beams with Shear Deficiencies Using GFRP Strips
Author(s)
Kishor Chandra Panda1, Sriman Kumar Bhattacharyya2 and Sudhirkumar V. Barai3
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DOI:10.17265/1934-7359/2011.01.006
Affiliation(s)
1. Department of Civil Engineering, ITER, SOA University, Bhubaneswar, Orissa 751030, India
2. Central Building Research Institute, Roorkee, Uttarakhand 247667, India
3. Department of Civil Engineering, IIT, Kharagpur, West Bengal 721302, India
ABSTRACT
The shear performance, modes of failure, and strain analysis of simply supported reinforced concrete (RC) T-beams, externally strengthened in shear using epoxy bonded glass fiber reinforced polymer (GFRP) strips are focused in the present paper. Six RC T-beams of 2.5 m span without shear reinforcement are cast. Three beams are used as control specimens and rest three beams are strengthened in shear with GFRP strips in U-shape, side bonded at 45° and 90° to the longitudinal axis of the beam. All the beams are tested in a Universal Testing Machine. The test results demonstrate the feasibility of using an externally applied, epoxy-bonded GFRP strips to restore or increase the shear strength of RC T-beams. It is also observed that the RC T-beams strengthened by diagonal side strips outperformed those strengthened with vertical side strips.
KEYWORDS
Reinforced concrete (RC), glass fiber-reinforced polymer (GFRP), shear strength, T-beams.
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