Retrofitting of Reinforced Concrete Beams using Rubberizedcoir Fibre Sheets

International Journal of Civil Engineering
© 2016 by SSRG - IJCE Journal
Volume 3 Issue 3
Year of Publication : 2016
Authors : Poorna Prasad Rao.O.L, RamaMohan Rao.P
How to Cite?

Poorna Prasad Rao.O.L, RamaMohan Rao.P, "Retrofitting of Reinforced Concrete Beams using Rubberizedcoir Fibre Sheets," SSRG International Journal of Civil Engineering, vol. 3,  no. 3, pp. 20-27, 2016. Crossref,


This paper presents retrofitting of reinforced concrete beams using Rubberized coir fiber,a natural laminate,inboth flexure and shear for which is subjected under two point loading.The main aim of this study is to rehabilitate the structurally deficient beam and to make it serviceable in both flexure and shear.The beams retrofitted with rubberized coir fibre sheets(RCFS) are used to make structure efficient and to restore stiffness and strength values greater than those of control beams.Understanding the response of these components during loading is crucial to the development of an overall efficient and safe structure.Formation of first cracks,RCFSdebondingand onsetof concrete crushing are compared and discussed.Load–deflection behavior,failure modes and crackpropagation patterns are studied extensively.The presence of shear straps to enhance shear strength has the dual benefit of delaying debonding of RCFS sheets used for flexural strengthening. The test results showed that thestiffness of the RCFS retrofitted beams are greatly increased compared to the control beams and also the deflection of retrofitted beams were reduced predominantly at the early stages of loading.The ultimate loads at failure of the specimen were increased.Instead of replacing the entire structure,it would be better to go for retrofitting.


Retrofit, Rubberized coir fibre, Stiffness.


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