A new approach of shear connectors to delay debonding of CFRP laminates used for shear strengthening of RC beams

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Shear strengthening of RC beam with adhesively bonded carbon fiber reinforced-polymer (CFRP) laminates is becoming both environmentally and economically more preferable than replacement. However, the early separation of these plated stripes was the most critical failure which leads to prevent reaching the full capacity required from the strengthening. This study aims to present a new method to prevent debonding failure of CFRP laminates adhesively glued to concrete surface using embedded connectors to enhance the interfacial bond strength. Therefore, steel bar and adhesive connectors were fabricated and used at the interface of the bonded CFRP laminates. Five beam specimens including one control beam were tested to investigate the effects of the connectors to prevent or delay the premature debonding of the EB CFRP laminates. The experimental results showed that both steel and adhesive connectors completely prevented premature debonding failure of CFRP shear strip and allowed the beams to fail by flexure with full ductility and strength. Steel and adhesive connectors would enhance 33% and 38% failure loads respectively as compared to strengthened beam without connectors.

Original languageEnglish
Title of host publicationMaterial Engineering and Smart Materials
EditorsKai Li, K.M. Gupta , Saadah Abdul Rahman, Hao Gong
PublisherTrans Tech Publications Ltd
Pages61-66
Number of pages6
ISBN (Print)9783038357360
DOIs
Publication statusPublished - 01 Jan 2017
EventInternational Conference on Material Engineering and Smart Materials, ICMESM 2016 - Singapore, Singapore
Duration: 23 Jun 201625 Jun 2016

Publication series

NameMaterials Science Forum
Volume895 MSF
ISSN (Print)0255-5476

Other

OtherInternational Conference on Material Engineering and Smart Materials, ICMESM 2016
CountrySingapore
CitySingapore
Period23/06/1625/06/16

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Jabbar, A. S. A., Alam, M. A., & Mustapha, K. N. (2017). A new approach of shear connectors to delay debonding of CFRP laminates used for shear strengthening of RC beams. In K. Li, K. M. Gupta , S. A. Rahman, & H. Gong (Eds.), Material Engineering and Smart Materials (pp. 61-66). (Materials Science Forum; Vol. 895 MSF). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.895.61