Proposal of a Law Behavior Model for High Performance Concrete in Uniaxial Compression

The mechanical behavior model of high performance concrete (hpc) in simple compression proposed in this article is a phenomenological model, based on considerations and physico-mechanical hypotheses and the observations made at the time of the tests, for a simple and convenient application. This modelling uses the Young modulus of Young of Mbessa [8], descended of the model of Voigt (mixing law) while considering after justification, the concrete like a biphasic material (mortar and coarse aggregate). The model integrates the coefficient of shape of the coarse aggregate and, the absence of a transition zone (halo) constitutes a pledge for the hypothesis of "non-slip" between the two phases. The modulus is validated on a formulation of hpc made with slag [8].