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Percolation Theory and Hydrodynamics of Soil-Peat Mixtures

UMR SAGAH, INH, 2, rue Le Nôtre, F49045 Angers cedex, France

View larger version (10K): [in a new window]   Fig. 1 Crack model: d is the diameter, e the aperture, and l, the distance between two crack centers (Guéguen and Palciauskas, 1992)

View larger version (19K): [in a new window]   Fig. 2 Comparison of the relative surface porosity (pore surface/image surface expressed in %) of all pore classes between vertical face and horizontal face for l20t under different loadings and for an initial water content of 0.25 m3 m-3

View larger version (13K): [in a new window]   Fig. 3 The mean minor axis (mm) as a function of the mean major axis (mm) of all pore classes for l20t samples under different loadings and for initial water content of 0.25 m3 m-3

View larger version (120K): [in a new window]   Fig. 4 Pore density of l20t samples as a function of the applied load for initial water content of 0.25 m3 m-3

View larger version (16K): [in a new window]   Fig. 5 Measured permeability values as a function of calculated p - pc using values of , (Table 1) and the measured porosity , for l20t samples under different loadings and for different initial water contents

View larger version (19K): [in a new window]   Fig. 6 Comparison between calculated permeability obtained from crack model and measured permeability for silty clay loam, l20t and l40t, as a function of initial volumetric water content, for all values of vertical stress

View larger version (15K): [in a new window]   Fig. 7 Factor f as a function of vertical stress for silty clay loam, l20t and l40t, at different values of water content

View larger version (15K): [in a new window]   Fig. 8 Effective porosity as a function of initial volumetric water content for silty clay loam, l20t and l40t, and for all values of vertical stress