This paper aims at modelling early age concrete cracking to ...... .._...,._.._._.._,,'V chemo-mechanical couplings. The proposed modelling accounts explicitly for the hydration of cement the modelling at macro- level of material description (latent heat of hydration degree, thermal and autogeneous…
This paper aims at modelling early age concrete cracking to ...... .._...,._.._._.._,,'V chemo-mechanical couplings. The proposed modelling accounts explicitly for the hydration of cement the modelling at macro- level of material description (latent heat of hydration degree, thermal and autogeneous shrinkage), as well as cracks as geometrical discontinuities (crack-width), and for heterogeneity the matter using a probabilistic approach. In the latter, the heterogeneity concrete is taken into account by random distribution of the mechanical properties (Young's modulus, tensile strength). the case of concrete, these mechanical properties depend furthermore hydration degree of concrete, and strains of thermal chemical origin (autogeneous shrinkage) are taken into account. The proposed modelling accounts for the heterogeneity of maturing concrete (and for related size effects), and gives direct access to crack-patterns, crack-width crack-spacing induced by thermo-chemo-mechanical couplings a minimum of material parameters of clear physical significance accessible by standard material tests.