Fabric map for kaolinite: Effects of pH and ionic concentration on behavior

Angelica M. Palomino*, Juan Carlos Santamarina

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

134 Scopus citations

Abstract

The behavior of fine-grained mineral systems is dependent on pore-fluid characteristics. The systematic analysis of previously published studies supports the development of a fabric map in the pH and ionic concentration space as a working hypothesis. This conceptual study is complemented with an extensive battery of tests where surface charge and particle interactions are controlled through pore-fluid characteristics. The macro-scale tests include sedimentation, viscosity and liquid limit, and involve a wide range of solid volume fractions (suspension to sediment) and strain levels. Experimental results permit the development of an updated fabric map on the pH-ionic concentration space which takes into consideration all experimental results. The fabric map is structured around a critical pH level and a threshold ionic concentration beyond which van der Waals attraction prevails.

Original languageEnglish (US)
Pages (from-to)211-223
Number of pages13
JournalClays and Clay Minerals
Volume53
Issue number3
DOIs
StatePublished - Jun 1 2005

Keywords

  • Clay
  • Double layer
  • Electrical forces
  • Liquid limit
  • Particle-particle interactions
  • Sedimentation
  • Viscosity

ASJC Scopus subject areas

  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)

Fingerprint

Dive into the research topics of 'Fabric map for kaolinite: Effects of pH and ionic concentration on behavior'. Together they form a unique fingerprint.

Cite this