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This article in SSSAJ

  1. Vol. 22 No. 1, p. 5-8
    Received: Dec 15, 1956
    Accepted: Nov 5, 1957

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Structural Implications of Moisture Retention by Clay-Size Soil Materials1

  1. W. D. Kemper2



At differential pressures, less than 1 atm., clay materials from soils retain much more water than calculations from Gouy theory would predict. Experimental evidence is shown which indicates that the excess water held in these materials is the result of a structure consisting of particle-to-particle bonds. The ability of this structure to resist pressures and by inference, the strength of the particle-to-particle bonds, can be increased by adding organic matter and decreased by increasing the amount of sodium on the exchange complex.

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