Application of constitutive models in European codes to RC–FRC

The recent publication of codes for the design of FRC is a major step towards extending the use of the material. An in depth analysis indicates several differences between the constitutive models proposed in the existing codes. In this study, these models are compared and a numerical simulation is performed to evaluate their differences in terms of the structural behavior predicted and measured in an experimental program of RC–FRC elements. The predictions provided by the models fit satisfactorily the experimental results for elements with steel fibers and with plastic fibers.

► The constitutive models for FRC in the European codes are reviewed.
► The models are used in the numerical simulation of an experimental program.
► The capacity of the models to reproduce the response of FRC elements is analyzed.
► Satisfactory predictions of the mechanical response obtained with the models.
► Models are applicable to steel fiber and polypropylene macro-fiber reinforcement.