Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Predicting the atmospheric carbonation of cementitious materials using fully coupled two-phase reactive transport modelling

Abstract : The durability assessment of cementitious materials and concrete subjected to atmospheric carbonation of concrete has been an extensive study of research. Experimental studies on the subject show, among other results, that the response depends strongly on the cement composition. This paper focuses on two model materials: an hydrated C 3 S paste and a low-pH paste, which exhibits a higher tendency to cracking. We show that a fully coupled reactive transport model can reproduce the measured experimental depths of carbonation without a need of fitting parameters. A sensitivity provides insights about the most relevant parameters to accurately model the atmospheric carbonation. Furthermore , results suggest that low-pH cement materials might be inherently less mechanically robust when subjected to atmospheric carbonation, due to a higher C-S-H decalcification rate. This implies that these materials are more likely to develop fractures, which could have implications in the framework of gas or radioactive waste disposal.
Liste complète des métadonnées

Littérature citée [78 références]  Voir  Masquer  Télécharger

https://hal-mines-paristech.archives-ouvertes.fr/hal-02456212
Contributeur : Nicolas Seigneur <>
Soumis le : lundi 27 janvier 2020 - 11:12:21
Dernière modification le : jeudi 25 juin 2020 - 14:54:34

Fichier

Atm_Carb.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Nicolas Seigneur, E. Kangni-Foli, V. Lagneau, A. Dauzères, S. Poyet, et al.. Predicting the atmospheric carbonation of cementitious materials using fully coupled two-phase reactive transport modelling. Cement and Concrete Research, Elsevier, 2020, 130, ⟨10.1016/j.cemconres.2019.105966⟩. ⟨hal-02456212⟩

Partager

Métriques