Suction and its effects in unfrozen water of frozen soils

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AuthorSearch for:
ConferenceProceedings: Permafrost International Conference: 01 November 1963,
Pages225229; # of pages: 5
SubjectPermafrost; Soils
AbstractSubstantial quantities of water remain unfrozen in soils at temperatures of several degrees below 0°C. The proportion of unfrozen water decreases as the temperature is lowered, but as much as half of the water may exist unfrozen at -1°C. This unfrozen water has been attributed to the suctions or negative pore pressures that develop as a result of ice-lens growth in the soil. A negative pore pressure in a saturated soil, in the absence of external loading, results in a positive effective stress (a stress acting across the grain - to-grain contacts) equal to the negative pore pressure. An increase in effective stress causes consolidation in compressible soils.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number9273
NPARC number20375599
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Record identifier36918fa4-66b1-493e-8b57-ff385bc44b5d
Record created2012-07-23
Record modified2016-05-09
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