Coupled diffusion-fabric-flow phenomena: An effective stress analysis

M. Fam; J. C. Santamarina

doi:10.1139/t96-074

Coupled diffusion-fabric-flow phenomena: An effective stress analysis

M. Fam^*, J. C. Santamarina

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Concentration diffusion, fluid flow and fabric changes are coupled phenomena in fine soils. Indeed, experimental results previously presented by the authors showed the presence of a pressure front advancing ahead of the diffusing high-concentration front in bentonite and kaolinite specimens. This note presents a simple analysis of diffusion-fabric-flow coupling, based on elementary double-layer repulsion and attraction. Model predictions adequately agree with experimental data. High specific surface, high initial void ratio, and low initial pore-fluid concentration increase the sensitivity of soils to changes in pore-fluid concentration and enhance the potential development of pore pressure fronts.

Original language	English (US)
Pages (from-to)	515-522
Number of pages	8
Journal	Canadian Geotechnical Journal
Volume	33
Issue number	3
DOIs	https://doi.org/10.1139/t96-074
State	Published - Jun 1996
Externally published	Yes

Keywords

Clay
Coupling
Diffusion
Interparticle forces
Pore pressure

ASJC Scopus subject areas

Civil and Structural Engineering

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10.1139/t96-074

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title = "Coupled diffusion-fabric-flow phenomena: An effective stress analysis",

abstract = "Concentration diffusion, fluid flow and fabric changes are coupled phenomena in fine soils. Indeed, experimental results previously presented by the authors showed the presence of a pressure front advancing ahead of the diffusing high-concentration front in bentonite and kaolinite specimens. This note presents a simple analysis of diffusion-fabric-flow coupling, based on elementary double-layer repulsion and attraction. Model predictions adequately agree with experimental data. High specific surface, high initial void ratio, and low initial pore-fluid concentration increase the sensitivity of soils to changes in pore-fluid concentration and enhance the potential development of pore pressure fronts.",

keywords = "Clay, Coupling, Diffusion, Interparticle forces, Pore pressure",

author = "M. Fam and Santamarina, {J. C.}",

year = "1996",

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pages = "515--522",

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TY - JOUR

T1 - Coupled diffusion-fabric-flow phenomena

T2 - An effective stress analysis

AU - Fam, M.

AU - Santamarina, J. C.

PY - 1996/6

Y1 - 1996/6

N2 - Concentration diffusion, fluid flow and fabric changes are coupled phenomena in fine soils. Indeed, experimental results previously presented by the authors showed the presence of a pressure front advancing ahead of the diffusing high-concentration front in bentonite and kaolinite specimens. This note presents a simple analysis of diffusion-fabric-flow coupling, based on elementary double-layer repulsion and attraction. Model predictions adequately agree with experimental data. High specific surface, high initial void ratio, and low initial pore-fluid concentration increase the sensitivity of soils to changes in pore-fluid concentration and enhance the potential development of pore pressure fronts.

AB - Concentration diffusion, fluid flow and fabric changes are coupled phenomena in fine soils. Indeed, experimental results previously presented by the authors showed the presence of a pressure front advancing ahead of the diffusing high-concentration front in bentonite and kaolinite specimens. This note presents a simple analysis of diffusion-fabric-flow coupling, based on elementary double-layer repulsion and attraction. Model predictions adequately agree with experimental data. High specific surface, high initial void ratio, and low initial pore-fluid concentration increase the sensitivity of soils to changes in pore-fluid concentration and enhance the potential development of pore pressure fronts.

KW - Clay

KW - Coupling

KW - Diffusion

KW - Interparticle forces

KW - Pore pressure

UR - http://www.scopus.com/inward/record.url?scp=0030153188&partnerID=8YFLogxK

U2 - 10.1139/t96-074

DO - 10.1139/t96-074

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JO - Canadian Geotechnical Journal

JF - Canadian Geotechnical Journal

IS - 3

ER -

Coupled diffusion-fabric-flow phenomena: An effective stress analysis

Abstract

Keywords

ASJC Scopus subject areas

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