- Multibody approach for reactive transport modeling in discontinuous-heterogeneous porous media doi link

Auteur(s): Socié Adrien, Dubois F., Monerie Y., Perales Frédéric

(Article) Publié: Computational Geosciences, vol. p. (2021)

Ref HAL: hal-03269431_v1
DOI: 10.1007/s10596-021-10058-x
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In the context of long-term degradation of porous media, the coupling between fracture mechanics and reactive transport is investigated. A reactive transport model in a cracked discontinuous and heterogeneous porous medium is proposed. The species transport through and along the crack network are taken into account in a multibody approach. A dedicated geochemistry solver is developed and allows to take into account a significant number of chemical reactions. The model is validated via a benchmark for a porous medium without discontinuity. The applications deal with two kinds of chemical attacks in a pre-cracked concrete sample and highlight the impact of the discontinuities in the reactive transport kinetic and on the localization of the chemical degradation. The results bring out that a unidirectional descriptor, such as the depth of ingress rate, is not sufficient to describe the material degradation correctly.