Effects of pore water chemical composition on the hydro-mechanical behavior of natural stiff clays

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Effects of pore water chemical composition on the hydro-mechanical behavior of natural stiff clays. / Nguyen, X.P.; Cui, Y.J.; Tang, A.M.; Deng, Y.F.; Li, Xiang Ling; Wouters, L.; Chen, Guangjing (Peer reviewer).

In: Engineering Geology, Vol. 166, 11.2013, p. 52-64.

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Nguyen, X.P. ; Cui, Y.J. ; Tang, A.M. ; Deng, Y.F. ; Li, Xiang Ling ; Wouters, L. ; Chen, Guangjing. / Effects of pore water chemical composition on the hydro-mechanical behavior of natural stiff clays. In: Engineering Geology. 2013 ; Vol. 166. pp. 52-64.

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@article{d7c35eb7468e4a5481cec418d8bd83a7,
title = "Effects of pore water chemical composition on the hydro-mechanical behavior of natural stiff clays",
abstract = "Boom Clay and Ypresian Clays have been considered as potential geological host formations for radioactive waste disposal in Belgium. Considering the significant differences in pore water chemical composition between several sites involving these two formations as well as the possible evolution of the chemical composition during the large lifespan of a radioactive waste disposal, it appeared important to investigate the effects of porewater chemical composition on the hydro-mechanical behaviors of these two potential host formations. In this study, these effects were investigated by carrying out specific oedometer tests. Different compositions were considered for this purpose: distilled water, synthetic site water, and Sodium Chloride solutions at concentrations of 15 and 30 g/L. Clear effects of pore water chemical composition on the hydro-mechanical behavior were observed. Furthermore, the pore water chemical composition effects were found to be mineralogy, stress state and salt concentration dependent. The competition between the physico-chemical and mechanical effects was identified: the porewater chemical composition effect is clear only in the low-stress range where the hydro-mechanical behavior is dominated by the physico-chemical effect.",
keywords = "Boom Clay, Ypresian Clays, oedometer test, physico-chemical effect, hydro-mechanical behavior",
author = "X.P. Nguyen and Y.J. Cui and A.M. Tang and Y.F. Deng and Li, {Xiang Ling} and L. Wouters and Guangjing Chen",
note = "Score = 10",
year = "2013",
month = "11",
doi = "10.1016/j.enggeo.2013.08.009",
language = "English",
volume = "166",
pages = "52--64",
journal = "Engineering Geology",
issn = "0013-7952",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Effects of pore water chemical composition on the hydro-mechanical behavior of natural stiff clays

AU - Nguyen, X.P.

AU - Cui, Y.J.

AU - Tang, A.M.

AU - Deng, Y.F.

AU - Li, Xiang Ling

AU - Wouters, L.

A2 - Chen, Guangjing

N1 - Score = 10

PY - 2013/11

Y1 - 2013/11

N2 - Boom Clay and Ypresian Clays have been considered as potential geological host formations for radioactive waste disposal in Belgium. Considering the significant differences in pore water chemical composition between several sites involving these two formations as well as the possible evolution of the chemical composition during the large lifespan of a radioactive waste disposal, it appeared important to investigate the effects of porewater chemical composition on the hydro-mechanical behaviors of these two potential host formations. In this study, these effects were investigated by carrying out specific oedometer tests. Different compositions were considered for this purpose: distilled water, synthetic site water, and Sodium Chloride solutions at concentrations of 15 and 30 g/L. Clear effects of pore water chemical composition on the hydro-mechanical behavior were observed. Furthermore, the pore water chemical composition effects were found to be mineralogy, stress state and salt concentration dependent. The competition between the physico-chemical and mechanical effects was identified: the porewater chemical composition effect is clear only in the low-stress range where the hydro-mechanical behavior is dominated by the physico-chemical effect.

AB - Boom Clay and Ypresian Clays have been considered as potential geological host formations for radioactive waste disposal in Belgium. Considering the significant differences in pore water chemical composition between several sites involving these two formations as well as the possible evolution of the chemical composition during the large lifespan of a radioactive waste disposal, it appeared important to investigate the effects of porewater chemical composition on the hydro-mechanical behaviors of these two potential host formations. In this study, these effects were investigated by carrying out specific oedometer tests. Different compositions were considered for this purpose: distilled water, synthetic site water, and Sodium Chloride solutions at concentrations of 15 and 30 g/L. Clear effects of pore water chemical composition on the hydro-mechanical behavior were observed. Furthermore, the pore water chemical composition effects were found to be mineralogy, stress state and salt concentration dependent. The competition between the physico-chemical and mechanical effects was identified: the porewater chemical composition effect is clear only in the low-stress range where the hydro-mechanical behavior is dominated by the physico-chemical effect.

KW - Boom Clay

KW - Ypresian Clays

KW - oedometer test

KW - physico-chemical effect

KW - hydro-mechanical behavior

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_134301

UR - http://knowledgecentre.sckcen.be/so2/bibref/11284

U2 - 10.1016/j.enggeo.2013.08.009

DO - 10.1016/j.enggeo.2013.08.009

M3 - Article

VL - 166

SP - 52

EP - 64

JO - Engineering Geology

JF - Engineering Geology

SN - 0013-7952

ER -

ID: 370006