Fine-grained mixtures: fabric formation and control

Angelica M. Palomino, J. C. Santamarina

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Fabric formation in fine-grained particulate materials depends on pore fluid characteristics and the mineral and geometric characteristics of particles. The behavior of both individual mineral systems and mineral mixtures is studied through macroscale tests involving a wide range of solid volume fractions and strain levels. Results show that (1) a clear fabric map develops on the pH-ionic concentration space for single mineral systems, (2) Coulombic attraction between oppositely charged mineral particles in kaolinite-calcium carbonate mixtures heavily influences particle associations at low solids content, (3) the influence of an anionic polymer on single or mixed mineral systems is surface-charge dependent, (4) the response can be further modified by adding divalent cations to affect the cation-to-polymer ratio and control the level of particle associations within single and mixed mineral systems treated with polymers. These results are relevant to many natural soil environments and the possible development of engineered mineral mixtures for industrial applications. Copyright ASCE 2008.

Original languageEnglish (US)
Title of host publicationProceedings of Sessions of GeoCongress 2008 - GeoCongress 2008
Subtitle of host publicationCharacterization, Monitoring, and Modeling of GeoSystems, GSP 179
Pages229-236
Number of pages8
Edition179
DOIs
StatePublished - 2008
Externally publishedYes
EventGeoCongress 2008: Characterization, Monitoring, and Modeling of GeoSystems - New Orleans, LA, United States
Duration: Mar 9 2008Mar 12 2008

Other

OtherGeoCongress 2008: Characterization, Monitoring, and Modeling of GeoSystems
CountryUnited States
CityNew Orleans, LA
Period03/9/0803/12/08

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering

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