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The Water‐Ice Phase Composition of Clay‐Water Systems: I. The Kaolinite‐Water System
Author(s) -
Anderson Duwayne M.,
Tice Allen R.,
Banin Amos
Publication year - 1973
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1973.03615995003700060012x
Subject(s) - kaolinite , montmorillonite , phase (matter) , composition (language) , isothermal process , mineralogy , materials science , chemistry , thermodynamics , physics , composite material , philosophy , organic chemistry , linguistics
Previous work has indicated that when water‐ice phase composition curves are normalized to unit surface area, unfrozen water content values at all temperatures are higher for the kaolinite‐water system than for other clay‐water systems. In addition, the water‐ice phase composition curve for this system appeared to be the resultant of the superposition of two power curves of the form W u = αθβ. The measurements have been repeated using an improved isothermal calorimeter and the earlier results confirmed. Values of W u per unit surface area for the kaolinite‐water systems are more than twice as large as those for the montmorillonite‐water systems. Addition of polyox (polyethylene oxide) to the kaolinite‐water system had little effect on W u in the range of 0 < θ < 1.7 but diminished W u significantly at values of θ > 1.7. The observations are explained qualitatively in terms of a domain model of clayimbibed water.