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 language | English (US) |
|---|---|
| Pages (from-to) | 211-223 |
| Number of pages | 13 |
| Journal | Clays and Clay Minerals |
| Volume | 53 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jun 2005 |
| Externally published | Yes |
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)