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This article in SSSAJ

  1. Vol. 43 No. 4, p. 646-650
     
    Received: Feb 27, 1978
    Published: July, 1979


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doi:10.2136/sssaj1979.03615995004300040004x

Relations Between Geometrical Properties of Glass Beads Media and Their Main ψ(θ) Hysteresis Loops1

  1. Ch. Laroussi and
  2. L. W. De Backer2

Abstract

Abstract

A main hysteresis loop in the volumetric water content (θ)-suction (ψ) relation was determined experimentally for each of seven narrow size fractions of glass beads.

Geometrical properties of these media were separately obtained with a Purcell apparatus based on mercury intrusion. A linear relation between the mean radius of beads and the mean radius of pores was established. A computational model was established to relate the main hysteresis loops of porous media to their geometrical properties. As a consequence a diagram expressed in nondimensional variables ψ* and θ* is proposed to predict the main hysteresis loop of a similar porous medium whose geometrical properties are deduced by similitude from one of the explored fractions.

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