Theoretical Prediction of Axial Response of FRP Fully/partially Confined Circular Concrete Under Axial Loading

Shayanfar J., Rezazadeh M., Barros J. A.

10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), İstanbul, Turkey, 8 - 10 December 2021, vol.198, pp.1439-1449 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 198
  • Doi Number: 10.1007/978-3-030-88166-5_125
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.1439-1449
  • Keywords: FRP confined concrete, Partial confinement, Concrete dilation, Axial behavior, STRESS-STRAIN MODEL, BEHAVIOR
  • Istanbul Technical University Affiliated: No


The present study is dedicated to develop a new axial stress-strain model for FRP-based confinement strategies in case of FRP fully/partially confined circular concrete columns under axial compressive loading. For calculating axial stress versus axial strain curve, a new formulation as a function of concrete dilation response was suggested based on a large database of test results of FRP confined concrete. A new methodology was also developed to predict the ultimate condition of partially FRP confined concrete to take into account the possibility of concrete crushing failure mode. To evaluate the reliability and predictive performance of the developed model, it was compared with experimental data available in the literature. The results showed that it is sufficiently capable of predicting the experimental counterparts with the reasonable precision in the design content. This model can be adopted not only for fully confined concrete, but also in case of partial confinement system, demonstrating its wide applicability.