The axial compression strength of concrete columns has been proved to be significantly enhanced by external confinement. In this perspective, the use Fiber-Reinforced Polymers (FRPs) extensively studied. practical applications, FRP-confinement is installed on loaded columns, which can already deformed, while theoretical models neglect aspect. This paper concerns a new experimental investigation...

A plasticity model to predict the behavior of confined concrete is developed. The model is designed to implicitly account for the increase in strength and ductility due to confining a concrete member. The concrete model is implemented into a finite element (FE) model. By implicitly including the change in the strength and ductility in the material model, the confining material can be explicitly...

Abstract: In order to evaluate the capacity of RC members, the main codes allow the use of stress-strain laws that can reproduce closely the real behaviour of concrete, as opposed to parabola-rectangular or equivalent rectangular diagrams. Both sectional strength and ductility depend on the law of concrete, therefore they are influenced by the confinement of members, as evidenced in the literat...

This study is dedicated to the development of a generalized confinement model applicable circular concrete columns confined by FRP full and partial arrangements. To simulate axial stress versus strain curve, new strength proposed addressing relation pressure during loading , whose calibration was based on an extensive set test results. By combining theoretical basis experimental observations, i...