The path of moisture getting in and out of the red mud is different at different stages of hydraulic course, so the saturated water content
values of red mud have large differences influenced by the courses of moisture absorption and moisture desorption.
where [psi] denotes the suction; w denotes the water content corresponding to the suction; [w.sub.s] is the saturated water content
; and a, n, and m are the fitting parameters.
The fitted parameters including saturated hydraulic conductivity, pore size distribution parameter, saturated water content
, and residual water content are listed in Table 1 .
where [theta] represents the volumetric water content function, [[theta].sub.r] represents the residual water content and [[theta].sub.s] represents the saturated water content
. Substituting Eq.
All these problems probably vanished with the UI method, where the bulk soil was not waterlogged and the wetting process included all soil pressure heads from the residual to the saturated water content
From the steady-state flow experiment, we only estimate porosity (the saturated water content
) and longitudinal dispersivity.
[[theta].sub.s] is saturated water content
, [[theta].sub.0] is initial water content.
These columns were packed at density of 1.69 g/[cm.sup.3] at saturated water content
Zeleke and Si (2005, 2006) reported scale-dependent variability for hydraulic conductivity and soil water storage at 3 selected matric potentials (saturated water content
, field capacity, and residual water).
In this case, the root zone media residing at a deeper depth had slightly larger saturated water content
, [[theta].sub.sat], values than for samples near the surface.
where [K.sub.us] is the unsaturated hydraulic conductivity of thawed soil under the condition of saturated unfrozen water content (([[theta].sub.us])), [K.sub.s] is the saturated hydraulic conductivity of thawed soil, and [[theta].sub.s] is the saturated water content
of the soil.
Tests were performed on three undisturbed specimens with different initial water contents, starting from the saturated water content
or from the natural water content.