Design formula for the flexural strengthening of RC beams using prestressed CFRP reinforcement

Mohammadali Rezazadeh, Joaquim Barros, Honeyeh Ramezansefat

Research output: Contribution to conferencePaperpeer-review

Abstract

Applying a certain prestress level to the carbon fibre reinforced polymer (CFRP) reinforcement according to either externally bonded reinforcing (EBR) or near surface mounted (NSM) techniques can mobilize the strengthening potentialities of this high tensile strength composite material. For the prediction of the flexural behaviour of reinforced concrete (RC) structures strengthened with prestressed EBR or NSM CFRPs, however, simplified analytical and design formulations still need to be developed as a guidance for engineers to design this type of strengthened structures by hand calculation without any programming help. Hence, the current work aims to briefly explain a developed simplified analytical approach, with a design framework, to predict the flexural behaviour of RC beams flexurally strengthened with either prestressed EBR or NSM CFRP reinforcements. Moreover, an upper limit for the prestress level is proposed in order to optimize the ductility performance of the NSM prestressing technique. The good predictive performance of the analytical approaches was appraised by simulating the results of experimental programs composed of RC beams strengthened with prestressed NSM CFRP reinforcements.

Original languageEnglish
Pages174-179
Number of pages6
Publication statusPublished - 1 Jan 2015
Externally publishedYes
Event7th Biennial Conference on Advanced Composites In Construction, ACIC 2015 - Cambridge, United Kingdom
Duration: 9 Sep 201511 Sep 2015

Conference

Conference7th Biennial Conference on Advanced Composites In Construction, ACIC 2015
CountryUnited Kingdom
CityCambridge
Period9/09/1511/09/15

Fingerprint

Dive into the research topics of 'Design formula for the flexural strengthening of RC beams using prestressed CFRP reinforcement'. Together they form a unique fingerprint.

Cite this