Abstract
Abstract Models of the pore structure of pellets taken from a batch of sol-gel silica spheres have been constructed from magnetic resonance images of the macroscopic (∼0.04-1 mm), spatial distribution of spin density and spin-spin relaxation time within the material. Simulations of mercury porosimetry on these models gave rise to good predictions for the point of deviation of the intrusion and retraction curves, and the level of mercury entrapment, in agreement with those found by experiment. This finding suggested that mercury intrusion and retraction within the pellets are determined by the macroscopic structure of the material, as detected using MRI.
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