Investigation of the most effective method of installing CFRP strips in retrofitting concrete beams

Abstract

This paper is based on an experimental analysis carried out in order to identify the best method of installation of CFRP strips to enhance the flexural capacity of a reinforced concrete beam. Of the two methods of installation; EBR (externally bonded reinforcement) and NSM (Near surface mounted) the NSM method has been proven to be better in qualitative terms. The research gap of quantitative validation of this concept is fulfilled by this research paper. Two new methods of integration of EBR and NSM method were also experimented with the objective of increasing the flexural capacity of reinforced concrete elements by increasing the effective area of CFRP strips used. Suggestions to eliminate the failure modes observed in the experiment and to enhance the flexural capacity are also discussed in this paper.