CGRG Bibliography of Canadian Geomorphology
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Author : Groenevelt, P.H.; and Dagesse, D.F.
Date : 2005.
Title : Bulk volume change upon freezing of soil.
Publication : Joint Meeting of the Geological Association of Canada, the Mineralogical Association of Canada, the Canadian Society of Petroleum Geologists and the Canadian Society of Soil Sciences. May 15-18, 2005. Studley Campus of Dalhousie University, Halifax, Nova Scotia.
Issue :
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Abstract
Upon freezing, soil will either shrink or expand. The determining factor is the initial percent saturation and the absence/presence of an outside water supply. In the absence of an outside water supply, soils will, in general, shrink upon freezing, unless the initial percent saturation is very high. The mechanism, which causes this shrinkage, will be discussed. Increasing initial percentage saturation will cause greater shrinkage until the shrinkage reaches a maximum, upon which the action of a second physical phenomenon takes over. Further increases in initial percent saturation cause this second mechanism to become stronger until the effects of the two mechanisms balance each other and no bulk volume change upon freezing is observed. Further increases in initial percent saturation will cause the soil to expand upon freezing, until the expansion reaches a maximum at one hundred percent initial percent saturation. The curve describing the bulk volume change as a function of the initial percent saturation is dependent on the freezing temperature. A mathematical model will be presented that describes the complete bundle of temperature-dependent curves all the way from zero to one hundred percent initial percent saturation.
Bibliography of Canadian Geomorphology