CGRG Bibliography of Canadian Geomorphology
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Author : Groenevelt, P.H.
Date : 2008.
Title : Hydrostatics of frozen soil.
Publication : Canadian Society of Soil Science 2008 Annual Meeting: Frontiers of Soil Science. July 6 - 10, 2008. University of Northern British Columbia Prince George, British Columbia.
Issue : Program and Abstracts Volume:
Page(s) : 87.
Abstract
In contrast to rigid, non-frozen soils, a frozen soil does not have a unique water retention curve (WRC). Like for swelling soils, the WRC is dependent on the load (overburden) pressure. In contrast to non-frozen swelling soils, the WRC of a frozen soil is also dependent on the temperature. A theory is presented, formulating the dependence of the WRC on load pressure and temperature. This formulation requires the definition of the envelope-pressure potentials and the frost potentials of both, the liquid water and the ice in the soil. These potentials are expressed in terms of the void ratio, the ice ratio, the moisture ratio, the ice ratio equivalent and the moisture ratio equivalent. The relations between the variable are intrinsic properties of the porous medium. The theory presents the measurement of volume ratios as an alternative to the measurement of the equilibrium liquid and ice pressures, both being extremely difficult. Some data found in the literature are recalculated and presented in relevant form.
Bibliography of Canadian Geomorphology