| Titre : | Modeling of diffusive mass transport in micropores in cement based materials (2010) |
| Auteurs : | Yamaguchia Tetsuji, Auteur ; Kumi Negishi, Auteur ; Seiichi Hoshino, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Cement and concrete research (Vol. 39 N° 12, Décembre 2009) |
| Article en page(s) : | pp. 1149-1154 |
| Note générale : | Génie Civil |
| Langues : | Anglais |
| Index. décimale : | 691 (Matériaux de construction. Pièces et parties composantes) |
| Tags : | Microstructure ; Diffusion Long-term performance Modeling Waste management |
| Résumé : | In order to predict long-term leaching behavior of cement constituents for safety assessments of radioactive waste disposal, we modeled diffusive mass transport in micropores in cement based materials. Based on available knowledge on the pore structure, we developed a transport porosity model that enables us to estimate effective porosity available for diffusion (transport porosity) in cement based materials. We microscopically examined the pore structure of hardened cement pastes to partially verify the model. Effective diffusivities of tritiated water in hardened cement pastes were also obtained experimentally, and were shown to be proportional to the estimated transport porosity. |
| DEWEY : | 620.13 |
| ISSN : | 0008-8846 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0008884609002257 |
