2015 CSCE Annual Conference Regina - Building on our Growth Opportunities Conference
Fiber reinforced polymer (FRP) composites are often used to confine concrete, for seismic strengthening of existing reinforced concrete (RC) columns and for concrete filled FRPs tubes as earthquake-resistant columns in new structures. For the safety and serviceability of these structural elements, it is essential to understand the behavior at the element level. This is often done by observing the stress-strain behavior of FRP-confined concrete. In the past two decades, several researchers conducted extensive experimental and analytical investigations to understand and predict the stress-strain behavior of FRP-confined concrete under axial compression. This paper presents an extensive review of the previously published literature on the stress-strain behavior of FRP-confined concrete in circular concrete sections. The reviewed models will be categorized into two broad groups, such as design orientated models (DOMs) and analysis oriented models (AOMs). In the final part of the paper, a critical discussion is presented by comparing the constitutive models with the experimental results. The essential factors that influence the overall performance of the models are also highlighted.