minimal bound water, temperature effects on Ka are controlled primarily by the
effect of temperature on εw (i.e., for a given volumetric water content, θ, increasing the
temperature causes a decrease in Ka). In contrast, for finer grained soils having higher σe and a
greater fraction of bound water, temperature effects on Ka are controlled primarily by the effect
of temperature on σe and perhaps by the release of bound water (i.e., for a given θ, increasing the
temperature causes an increase in Ka