Finite element and experimental investigation into patch anchor sizes used to enhance the bond performance of FRP-to-concrete joints

Robin Kalfat, R. Al-Mahaidi

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

Abstract

The increasing demand to strengthen existing infrastructure has resulted in growing popularity of advanced fiber composite materials (FRPs) applied to reinforced concrete (RC) members as externally bonded reinforcement. Although FRPs contain very high tensile strengths, premature debonding usually prevents the material from reaching its full potential. Research is currently underway to address this shortcoming by the provision of anchorages to the ends of FRP reinforcement. Bi-directional fiber patch anchors have been found to be one of the most effective anchorages available, which are particularly suitable in shear strengthening applications. The ongoing need for verification of the various influencing parameters such as anchor size, spacing and fiber thickness have inspired further numerical and experimental studies resulting in the present work. The paper will investigate the effect of such parameters highlighting key relationships that may be applied for future use in anchorage strength models.

Original languageEnglish
Title of host publicationModeling of FRP Strengthening Techniques in Concrete Infrastructure at the ACI Fall 2011 Convention
Subtitle of host publicationToronto, Canada; 21-25 October 2011
PublisherAmerican Concrete Institute
Pages125-139
Number of pages15
Publication statusPublished - 2015
EventModeling of FRP Strengthening Techniques in Concrete Infrastructure at the ACI Fall Convention 2011 - Toronto, Canada
Duration: 21 Oct 201125 Oct 2011

Publication series

NameACI Special Publication
PublisherAmerican Concrete Institute
NumberSP 301
Volume2015-January
ISSN (Print)0193-2527

Conference

ConferenceModeling of FRP Strengthening Techniques in Concrete Infrastructure at the ACI Fall Convention 2011
CountryCanada
CityToronto
Period21/10/1125/10/11

Keywords

  • Bi-directional
  • Bond strength
  • Concrete
  • Fabric
  • FRP
  • Non-linear finite element
  • Patch anchor
  • Strengthening

Cite this

Kalfat, R., & Al-Mahaidi, R. (2015). Finite element and experimental investigation into patch anchor sizes used to enhance the bond performance of FRP-to-concrete joints. In Modeling of FRP Strengthening Techniques in Concrete Infrastructure at the ACI Fall 2011 Convention: Toronto, Canada; 21-25 October 2011 (pp. 125-139). [8] (ACI Special Publication; Vol. 2015-January, No. SP 301). American Concrete Institute.