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

Investigating the pore-water chemistry effects on the volume change behaviour of Boom clay

Abstract : The Essen site has been chosen as an alternative site for nuclear waste disposal in Belgium. The soil formation involved at this site is the same as at Mol site: Boom clay. However, owing to its geographical situation closer to the sea, Boom clay at Essen presents a pore water salinity 4-5 times higher than Boom clay at Mol. This study aims at studying the effects of pore water salinity on the hydro-mechanical behaviour of Boom clay. Specific oedometer cells were used allowing "flushing" the pore water in soil specimen by synthetic pore water or distilled water. The synthetic pore water used was prepared with the chemistry as that for the site water: 5.037 g/L for core Ess83 and 5.578 g/L for core Ess96. Mechanical loading was then carried out on the soil specimen after flushing. The results show that water salinity effect on the liquid limit is negligible. The saturation or pore water replacement under the in situ stress of 2.4 MPa does not induce significant volume change. For Ess83, hydro-mechanical behaviour was found to be slightly influenced by the water salinity; on the contrary, no obvious effect was identified on the hydro-mechanical behaviour of Ess96. This can be attributed to the higher smectite content in Ess83 than in Ess96.
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [15 références]  Voir  Masquer  Télécharger

https://hal-enpc.archives-ouvertes.fr/hal-00655753
Contributeur : Yu-Jun Cui <>
Soumis le : lundi 2 janvier 2012 - 11:19:50
Dernière modification le : vendredi 17 juillet 2020 - 17:09:07
Archivage à long terme le : : mardi 3 avril 2012 - 02:22:00

Fichier

Deng_et_al-JPCE2011_HAL.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Yongfeng Deng, Yu-Jun Cui, Anh Minh Tang, Xuan-Phu Nguyen, Xiang-Ling Li, et al.. Investigating the pore-water chemistry effects on the volume change behaviour of Boom clay. Physics and Chemistry of The Earth, Elsevier, 2011, 36 (17-18), pp.1905-1912. ⟨10.1016/j.pce.2011.07.016⟩. ⟨hal-00655753⟩

Partager

Métriques

Consultations de la notice

605

Téléchargements de fichiers

1587