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

M. Fam*, J. C. Santamarina

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


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 languageEnglish (US)
Pages (from-to)515-522
Number of pages8
JournalCanadian Geotechnical Journal
Issue number3
StatePublished - Jun 1996
Externally publishedYes


  • Clay
  • Coupling
  • Diffusion
  • Interparticle forces
  • Pore pressure

ASJC Scopus subject areas

  • Civil and Structural Engineering


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