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Experimental Study on Shear Strengthening of RC Beam using Glass Fiber Reinforced Polymer Sheets

Author(s):

Machhindra Gumanrao Kude , Late G.N. Sapkal COE, Nashik; Prof. Gururaj Basveshwar Katti, Late G.N. Sapkal COE, Nashik

Keywords:

FRP, Glass Fiber Reinforced Polymer (GFRP) RC Beam, Shear Strength

Abstract

The strengthening is required to increase strength of the existing structures to meet current requirements of loadings and to restore the original strength of the structures that are damaged by accidents or earthquakes. A lot of strengthening work is carried out using FRP composites for flexure strengthening of beams and the confinement of the columns, but the studies on the use of the composite material for the strengthening shear deficient concrete structures are limited and mostly by using CFRP sheets. The shear failure of concrete is catastrophic because of the brittle nature and no advanced warning prior to the failure. Therefore it is often necessary to pay more attention to the shear strength of the concrete structure. The behavior of reinforced concrete structure in shear is itself quite complex that has not been completely resolved due to many influencing parameters such as amount of longitudinal reinforcement, shear span to depth ratio, grade of the concrete etc. If we add different varying parameters of fiber such as type of fiber, its orientation, thickness the problem becomes more complex. The shear strengthening by using FRP is still under investigation and the results obtained are scare and controversial. The experimental database available is also very less. The objective of this paper is to increase the shear capacity of the beams using externally bonded Glass Fiber Reinforced Polymer (GFRP) sheets, to provide an experimental database to study the effect of fiber orientation, wrapping pattern (side wrap and U jacketing) by keeping other parameters constant and most importantly to compare analytical models and check its suitability for the design members strengthened using GFRP sheets.

Other Details

Paper ID: IJSRDV3I70192
Published in: Volume : 3, Issue : 7
Publication Date: 01/10/2015
Page(s): 616-619

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