Suction and its effects in unfrozen water of frozen soils
Substantial 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 neg...
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| Format: | Article in Journal/Newspaper |
| Language: | English |
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Building Research Advisory Board at Purdue University
1963
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| Online Access: | https://nrc-publications.canada.ca/eng/view/ft/?id=36918fa4-66b1-493e-8b57-ff385bc44b5d https://nrc-publications.canada.ca/eng/view/object/?id=36918fa4-66b1-493e-8b57-ff385bc44b5d https://nrc-publications.canada.ca/fra/voir/objet/?id=36918fa4-66b1-493e-8b57-ff385bc44b5d |
| Summary: | Substantial 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. Peer reviewed: No NRC publication: Yes |
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