Relations Between Geometrical Properties of Glass Beads Media and Their Main ψ(θ) Hysteresis Loops1
- Ch. Laroussi and
- L. W. De Backer2
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.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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