Experimental determination of apparent specific heats of frozen soils

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DOIResolve DOI: http://doi.org/10.1680/geot.1964.14.2.133
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Journal titleGeotechnique
Pages133142; # of pages: 10
SubjectPermafrost; Soils; freezing point; specific heat; latent heat of fusion; Sol; point de congelation; chaleur massique; sol (terre); chaleur de fusion
AbstractA property of water in porous materials is that it freezes at temperatures below 0 degrees C. There is no single freezing temperature for water in soils. As ice is formed the freezing point of the decreasing quantity of unfrozen water falls further below 0 degrees C. Latent heat of fusion is thus involved in temperature changes over a range extending to several degrees below 0 degrees C. The latent heat and specific heat together constitute an apparent specific heat. Apparent specific heats for various silt, clay and organic soils have been measured in a calorimeter. The apparent specific heats generally rise as temperatures approach 0 degrees C, and in a clay soil may be ten times as great at -1 degrees C as at -5 degrees C. The apparent specific heats for a given temperature depend on whether the soil is freezing or thawing, and on various other factors. The precise determination of heat quantities involved in temperature changes in soil in situ is difficult, mainly because of the several factors influencing the freezing of the soil moisture.
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AffiliationNational Research Council Canada
Peer reviewedNo
NRC number8031
NPARC number20377773
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Record identifier9e886926-c038-48b7-967d-c2af878d1bc8
Record created2012-07-24
Record modified2016-05-09
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