STRESS-DISTRIBUTION IN A CONFINED WET CAKE IN THE COMPRESSION-PERMEABILITY CELL AND ITS APPLICATION

Stress distribution in a confined wet cake is analysed by solving the equation of equilibrium of force acting on the system. An integrated e quation is derived to estimate the stress distribution within the cake providing the boundary values around the cell are known. The results are applied to estimate the mean stress acting on the confined cake an d also to correct the effect of side-wall friction of the compression- permeability (C-P) cell tests. These corrected data are then used to p redict the performance of constant-pressure filtrations. From the resu lts of these predictions, it is indicated that the simulated results b ased on the corrected C-P cell test data may give an average deviation around 5%, while the simulated results based on the C-P cell test dat a without correction give a deviation higher than 10%. (C) 1998 Elsevi er Science S.A. All rights reserved.