NDLI: Hydraulic Conductivity and Coefficient of Consolidation of Two Sulphide Clays in Sweden

Content Provider	Springer Nature Link
Author	Müller, Rasmus Larsson, Stefan
Copyright Year	2011
Abstract	The variation and anisotropy in hydraulic conductivity and the coefficient of consolidation was investigated for two Swedish sulphide clays. A series of constant rate of strain oedometer tests was performed on samples trimmed in the vertical and horizontal direction. A methodology to evaluate the horizontal coefficients of consolidation c h via the horizontal hydraulic conductivity k h and the vertical compression modulus M v is proposed. Laboratory evaluations of c h are also compared with determinations of c h from in situ piezometer measurements in vertically drained sulphide clay. Furthermore, the validity of the empirical correlation between hydraulic conductivity change index C k and initial void ratio e 0, C k = 0.5e 0 (Tavenas et al. in Can Geotech J 20(4):645–660, 1983b), was investigated for the sulphide clays. The results from the investigation show large ranges in measured hydraulic conductivities and coefficients of consolidation. However, the results indicate that the correlation C k = 0.5e 0 is valid. The anisotropy in hydraulic conductivity and the coefficient of consolidation of the sulphide clays tested seems to be small. For design purposes, multiple tests for assessment of hydraulic conductivity and the coefficient of consolidation should be made, and a partial factor of safety, depending on the requisite level of safety and the spatial variability of the parameters, should be introduced. For design purposes in this type of clay, k h = k v and c h = c v are suggested.
Starting Page	173
Ending Page	186
Page Count	14
File Format	PDF
ISSN	09603182
Journal	Geotechnical and Geological Engineering
Volume Number	30
Issue Number	1
e-ISSN	15731529
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-10-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydraulic conductivity Coefficient of consolidation Anisotropy CRS test Prefabricated vertical drain Sulphide clay Civil Engineering Geotechnical Engineering & Applied Earth Sciences Terrestrial Pollution Waste Management/Waste Technology Hydrogeology
Content Type	Text
Resource Type	Article
Subject	Soil Science Geology Architecture Geotechnical Engineering and Engineering Geology

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