3D simulation of the leaching of cement-based materials in order to compare different leaching tests - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2010

3D simulation of the leaching of cement-based materials in order to compare different leaching tests

(1) , (2) , (1)
1
2
Laurent de Windt
Denis Damidot

Résumé

Leaching of cement-based materials is a complex process that depends on both the material intrinsic properties and the leaching test. The microstructure and cement-type of the material are typical examples of the former whereas the later consist of solution pH and composition, solution renewal rate and the liquid/solid volume ratio. As most of the tests are not normalized, this leads to a diversity of results in terms of alteration layer thicknesses and leaching kinetics. As a consequence, it is often difficult to compare and transpose experimental data from one experience to the other. 1D reactive transport modeling has proven to be adequate to simulate the coupling between diffusion, dissolution / precipitation and sorption processes that take place during leaching. The aim of this study is to demonstrate the usefulness of 3D reactive transport modeling to accurately simulate the features of the leaching device features, which is essential to compare results obtained by different leaching tests. Such simulations also enable to assess the mutual interaction between samples if the device contains several of them. Additionally, these simulations represent an interesting numerical tool in order to design new or complementary leaching tests.
Fichier principal
Vignette du fichier
conmod10_dewindt.pdf (395.34 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00516093 , version 1 (08-09-2010)

Identifiants

  • HAL Id : hal-00516093 , version 1

Citer

G. Aouad, Laurent de Windt, Denis Damidot. 3D simulation of the leaching of cement-based materials in order to compare different leaching tests. Conmod 2010, Jun 2010, Switzerland. pp.174-178. ⟨hal-00516093⟩
127 Consultations
98 Téléchargements

Partager

Gmail Facebook Twitter LinkedIn More