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Heats of Compression of Clay-Water Mixtures

Published online by Cambridge University Press:  01 July 2024

B. D. Kay  and
Philip F. Low
B. D. Kay*
Affiliation:
Department of Agronomy, Purdue University, 47907, Lafayette, Indiana, USA
Philip F. Low
Affiliation:
Department of Agronomy, Purdue University, 47907, Lafayette, Indiana, USA
*
†Present address: Department of Land Resource Science, University of Guelph, Guelph, Ontario, Canada
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Abstract

Heats of compression of glass bead-water and clay-water mixtures were determined from the peak heights of the thermograms produced when these mixtures were subjected to pressure in a Calvet differential microcalorimeter. It is known that the heat of compression is directly proportional to the peak height. When the latter quantity was plotted against the pressure applied to any mixture, two intersecting straight lines were obtained. The change in slope at the point of intersection was interpreted as being the result of a pressure-induced higher-order phase transition in the water.

The differential peak height, ε, was defined as the rate of change of peak height with pressure/g of water present in the mixture. Hence, it is directly proportional to the rate of change of the heat of compression with pressure/g of water. Values of ε were determined for both glass bead-water and clay-water mixtures containing different proportions of solids. It was found that ε remained nearly constant with increasing proportions of glass beads, whereas, it varied in a non-uniform way with increasing proportions of clay. Also, its values in the clay-water mixtures were relatively high. Calculations showed that the difference in ε values for the two mixtures could not be ascribed to the exchangeable cations associated with the clay particles. Consequently, it was ascribed to the effect of the particle surfaces on the structure of the vicinal water.

Type
Research Article
Information
Clays and Clay Minerals , Volume 23 , Issue 4 , August 1975 , pp. 266 - 271
Copyright
Copyright © 1975, The Clay Minerals Society

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Footnotes

*

Journal paper no. 5531, Purdue University, Agricultural Experiment Station.

References

Anderson, D. M. and Low, P. F., (1958) The density of water adsorbed by lithium-, sodium- and potassium-bentonite. Soil Sci. Soc. Am. Proc. 22 99–103.CrossRefGoogle Scholar
Calvet, E. and Prat, H., (1956) Microcalorimétrie, Applications Physico-Chimiques et Biologiques .Google Scholar
Calvet, E. and Prat, H., (1963) Recent Progress in Microca-lorimetry. New York Macmillan.Google Scholar
Clementz, D. M., (1969) Thermal Expansion of Water in Na-bentonite Systems. .Google Scholar
Davey, B. G. and Low, P. F., (1968) Clay-water interaction as affected by hydrous aluminum oxide films. Trans. 9th Int. Cong. Soil Sci. 1 607–616.Google Scholar
Davey, B. G. and Low, P. F., (1971) Physico-chemical properties of sols and gels of Na-montmorillonite with and without adsorbed hydrous aluminum oxide. Soil Sci. Soc. Am. Proc. 35 230–236.CrossRefGoogle Scholar
Davidtz, J. C. and Low, P. F., (1970) Relation between crystal-lattice configuration and swelling of montmoril-lonites. Clays and Clay Minerals 18 325–332.CrossRefGoogle Scholar
Eisenberg, D. and Kauzmann, W., (1969) The Structure and Properties of Water. London Oxford University Press.Google Scholar
Graham, J., (1964) Adsorbed water on clays. Rev. Pure Appl. Chem. 14 81–88.Google Scholar
Handbook of ChemistryPhysics, 1962 The Chemical Rubber Publishing Co..Google Scholar
Kay, B. D. and Low, P. F., (1972) Pressure-induced changes in the thermal and electrical properties of clay-water systems. J. Colloid Interface Sci. 40 337–343.CrossRefGoogle Scholar
Kell, G. S. and Whalley, E., (1965) The PVT properties of water—I: Liquid water in the temperature range 0-150°C and at pressures up to 1 kb. Phil. Trans. R. Soc. (London). 258 565–617.Google Scholar
Leonard, R. A. and Low, P. F., (1964) Effect of gelation on the properties of water in clay systems. Clays and Clay Minerals 12 311–325.Google Scholar
Low, P. F., (1961) Physical chemistry of clay-water interaction Adv. Agron. 13 269–327.CrossRefGoogle Scholar
Low, P. F. and White, J. L., (1970) Hydrogen bonding and polywater in clay-water systems. Clays and Clay Minerals 18 63–66.CrossRefGoogle Scholar
Martin, R. T., (1962) Adsorbed water on clay: a review. Clays and Clay Minerals 9 25–71.Google Scholar
Millero, F. J., (1968) Apparent molal expansibilities of some divalent chlorides in aqueous solution at 25°C. J. Phys. Chem. 72 4589–4593.CrossRefGoogle Scholar
(1964) National Engineering Laboratory Steam Tables. (Bain, R. W., editor) H.M.S.O., London.Google Scholar
Oster, J. D. and Low, P. F., (1964) Heat capacities of clay and clay-water mixtures. Soil Sci. Soc. Am. Proc. 28 605–609.CrossRefGoogle Scholar
Ravina, I. and Low, P. F., (1972) Relation between swelling, water properties and b-dimension in montmorillonite-water systems Clays and Clay Minerals 20 109–123.CrossRefGoogle Scholar