Research Article
Dec 1973
Electrical Dispersion in Relation to Soil Structure
Publication: Journal of the Soil Mechanics and Foundations Division
Volume 99, Issue 12
Abstract
The dielectric constant and conductivity of saturated clays vary with the frequency of alternating current in the range of 106 to 108 Hz. These variations can be used to reflect the influences of changes in fabric and structure-determining factors in clays, since conductivity and dielectric dispersion in the radio frequency range are influenced in a numerically significant and predictable manner by clay type and amount, water content, particle orientation, particle contact, and the nature of the heterogeneity and type and amount of electrolyte. A new compositional property, defined herein as the dielectric constant of the wet particles or aggregate, is shown to depend on the amount and type of clay, water content and to reflect the water-adsorbing capacity and fabric of a clay. Numerical values describing the compositional and geometrical properties of clay-water-electrolyte systems are obtained by representing the system by a simplified three-element electrical network.
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Information
Published In
Journal of the Soil Mechanics and Foundations Division
Volume 99 • Issue 12 • December 1973
Pages: 1113 - 1133
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: Dec 1973
Published online: Feb 12, 2021
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Authors
Affiliations
Kandiah Arulanandan, M.ASCE
Assoc. Prof. of Civ. Engrg., Univ. of California, Davis, Calif.
Scott S. Smith, AM.ASCE
Staff Engr., Converse Davis and Associates, Pasadena, Calif.
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