Investigating the pore-water chemistry effects on the volume change behaviour of Boom clay - École des Ponts ParisTech Access content directly
Journal Articles Physics and Chemistry of the Earth. Parts A/B/C Year : 2011

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

Yu-Jun Cui
Connectez-vous pour contacter l'auteur
Anh Minh A.M. Tang
Xiang-Ling Li
  • Function : Author
  • PersonId : 846061
Maarten van Geet
  • Function : Author
  • PersonId : 916851

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.
Fichier principal
Vignette du fichier
Deng_et_al-JPCE2011_HAL.pdf (340.74 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-00655753 , version 1 (02-01-2012)

Identifiers

Cite

Yongfeng Deng, Yu-Jun Cui, Anh Minh A.M. 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. Parts A/B/C, 2011, 36 (17-18), pp.1905-1912. ⟨10.1016/j.pce.2011.07.016⟩. ⟨hal-00655753⟩
254 View
1386 Download

Altmetric

Share

Gmail Facebook X LinkedIn More