An effort has been made to demonstrate use of a small geotechnical centrifu
ge as a research tool to understand moisture migration in a silty soil. Suc
h a basic study is essential for understanding the much more complex phenom
enon of solute transport through a soil, where the physical, chemical, and
biological properties of the soil-solute system play an important role. Pre
sent study indicates that the advection in soils is dependent on the state
of the soil and, in particular, on its degree of saturation. The effect of
pore structure on the advection process has also been demonstrated. The tre
nds of experimental data indicate that modeling of models may be valid only
for saturated soils.