A refined analytical method is proposed for determining the average (hydraulic) radius of a capillary on the basis of a three-dimensional model of the porous structure of materials, taking into account the geometry of the capillaries. The derived calculation formula for the mean radius is much more accurate than the generally accepted Kozeny formula. Good agreement with experimental data was obtained. On the basis of this model and a fundamentally new approach, a technique was developed and a calculated expression for the average radius was obtained from the data of liquid absorption into a porous material, which is several times more accurate than the known methods. The calculation results are given.
Dr. Tech. Sciences Yu. N. KRYUCHKOV (This email address is being protected from spambots. You need JavaScript enabled to view it.); Gzhel State University (Russia, Moscow region, settlement Electroizolyator)
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