NDLI: Changes in permeability of sand during triaxial loading: effect of fine particles production

Content Provider	Springer Nature Link
Author	Feia, Sadok Sulem, Jean Cau, Jean Ghabezloo, Siavash Clain, Xavier
Copyright Year	2014
Abstract	Various mechanisms can affect the permeability of dense unconsolidated sands: Volumetric dilation can lead to permeability increase, whereas strain localization in shear bands may increase or decrease the permeability depending on the state of compaction and on the level of grains breakage inside the band. To investigate these various mechanisms, an experimental study has been performed to explore the effect of different factors such as grain size and grain shape, confining pressure, level of shear, stress path, and formation of one or several shear bands on the permeability of dense sands under triaxial loading. The experimental results show a reduction of permeability during the consolidation phase and during the volumetric contraction phase of shear loading, which can be related to the decrease of porosity. The experimental results also show that, depending on the confining pressure, the permeability remains stable or decreases during the volumetric dilation phase despite the increase of total porosity. This permeability reduction is attributed to the presence of fine particles, which result from grains attrition during pre-localization and grains breakage inside the shear band during the post-localization phase.
Starting Page	1
Ending Page	19
Page Count	19
File Format	PDF
ISSN	18611125
Journal	Acta Geotechnica
Volume Number	11
Issue Number	1
e-ISSN	18611133
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-08-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fine particles production Permeability Sand Shear band Stress path Geoengineering, Foundations, Hydraulics Continuum Mechanics and Mechanics of Materials Geotechnical Engineering & Applied Earth Sciences Soil Science & Conservation Soft and Granular Matter, Complex Fluids and Microfluidics Structural Mechanics
Content Type	Text
Resource Type	Article
Subject	Geotechnical Engineering and Engineering Geology

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