Slenderness effects on circular FRP-wrapped reinforced concrete columns

Jason Fitzwilliam, Luke Bisby

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

Abstract / Description of output

Externally-applied circumferential FRP wraps have proven to be an efficient and effective technique to repair and strengthen structurally deficient reinforced concrete columns. Guidelines for the design of FRP-wrapped concrete members are currently available and field applications of this technique have been implemented around the world. However, two specific and related issues that require research attention are eccentric loading and slenderness effects on FRP-wrapped concrete columns. To date, the vast majority of tests on FRP-confined concrete have been performed on short, un-reinforced, small-scale concrete cylinders with height-to-diameter ratios of less than 3, and tested under concentric, monotonic axial load. These tests have been useful as a means of accurately characterizing the stress-strain behaviour of FRP-confined concrete such that it is now reasonably well understood. In practice however, most columns are subjected to eccentric loads and have considerably larger height-to-diameter ratios. The potential for increased susceptibility of FRP-wrapped columns to slenderness effects has received relatively little research attention, both for columns that become slender as a consequence of wrapping and increased service loads, and for strengthening of pre-existing slender members. This paper presents the results of an experimental program to investigate the effects of slenderness on FRP-wrapped circular reinforced concrete columns.

Original languageEnglish
Title of host publicationComposites in Civil Engineering, CICE 2006
EditorsAmir Mirmiran, Antonio Nanni
PublisherInternational Institute for FRP in Construction (IIFC)
Number of pages4
ISBN (Electronic)0615135862, 9780615135861
Publication statusPublished - 2006
Event3rd International Conference on Composites in Civil Engineering, CICE 2006 - Miami, United States
Duration: 13 Dec 200615 Dec 2006

Publication series

NameComposites in Civil Engineering, CICE 2006


Conference3rd International Conference on Composites in Civil Engineering, CICE 2006
Country/TerritoryUnited States

Keywords / Materials (for Non-textual outputs)

  • Confinement
  • Eccentric loads
  • Fibre reinforced polymers
  • FRP wraps
  • Reinforced concrete columns
  • Slenderness


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