Modified Failure Criterion to Predict Ultimate Strength of Circular Columns Confined by Different Materials

Girgin Z. C.

ACI STRUCTURAL JOURNAL, vol.106, no.6, pp.800-809, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 106 Issue: 6
  • Publication Date: 2009
  • Title of Journal : ACI STRUCTURAL JOURNAL
  • Page Numbers: pp.800-809


This study addresses the extension of a failure criterion developed for rock data to small or near full-size circular concrete columns confined by different materials. Initially, a wide range database on small-scale specimens confined by fiber-reinforced polymer (FRP) sheets or tubes and analytical studies were evaluated to predict the ultimate compressive strength. Then, the reinforced concrete (RC) short-columns retrofitted with FRP jacket were examined through available data. The research further covers middle- or near full-scale columns confined by FRP composites and steel reinforcement. All of these estimations were conducted within a unified approach to the failure criterion. Thus, the ultimate compressive strength for different confining materials can be predicted easily and systematically.