Zobrazeno 1 - 9
of 9
pro vyhledávání: '"pénétration du gel"'
Observations on which this report is based were made in the period 1962-66. They were made in natural soil and water- main trenches and were done to establish methods of determining depth of frost penetration, paying special attention to the question
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https://explore.openaire.eu/search/publication?articleId=od______1674::c7b4d5f6e9d86a43c9988bc374e71f17
https://doi.org/10.4224/20359073
https://doi.org/10.4224/20359073
Serious problems due to frost heaving and thaw settlement can be experienced by structures founded in seasonally and perennially frozen ground. Various design and construction techniques can be used to overcome or reduce the severity of these problem
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https://explore.openaire.eu/search/publication?articleId=od______1674::a4b810806126a61d2c1867e8de2db591
https://nrc-publications.canada.ca/eng/view/object/?id=4140e8ae-73b0-4a52-acf8-e364c7418ff0
https://nrc-publications.canada.ca/eng/view/object/?id=4140e8ae-73b0-4a52-acf8-e364c7418ff0
Autor:
Penner, E., Ueda, T.
A soil frost susceptibility test is proposed. The method involves the unidirectional freezing of a saturated sample by imposing a step freezing temperature at one end of the specimen and measuring the heave rate. The two most important conditions tha
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https://nrc-publications.canada.ca/eng/view/object/?id=5891c865-e4d6-4555-a076-708d2c21fc37
https://nrc-publications.canada.ca/eng/view/object/?id=5891c865-e4d6-4555-a076-708d2c21fc37
This translation is the third arranged by the Permafrost Subcommittee of the Associate Committee on Soil and Snow Mechanics of the National Research Council of Canada, of the Russian permafrost publication, "Principles of Geocryology". The first sect
Externí odkaz:
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https://nrc-publications.canada.ca/eng/view/object/?id=abb838c2-bbd9-444a-9952-a05e2637d60b
https://nrc-publications.canada.ca/eng/view/object/?id=abb838c2-bbd9-444a-9952-a05e2637d60b
Autor:
Penner, E.
This Digest contains a brief description of the physical processes involved in ground freezing and frost heaving and some suggestions on ways to prevent or diminish frost damage to various structures.
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https://doi.org/10.4224/40000788
https://doi.org/10.4224/40000788
Autor:
Penner, E.
On trouvera dans le présent Digeste une brève description des processus physiques impliqués dans la congélation du sol et dans le soulèvement par le gel ainsi que des suggestions concernant les moyens à employer pour empêcher ou diminuer les d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::f0b4f5bc58349095c5002e3f273c40f5
https://nrc-publications.canada.ca/eng/view/object/?id=52bc885d-8166-4df8-9814-bd108d8e75f7
https://nrc-publications.canada.ca/eng/view/object/?id=52bc885d-8166-4df8-9814-bd108d8e75f7
Autor:
E Penner
The frost heaving forces developed under a 1 ft (30.5 cm) diameter steel plate were measured in the field throughout one winter. The steel plate was fixed at the ground surface with a rock-anchored reaction frame. Heave gauges and thermocouples were
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https://nrc-publications.canada.ca/eng/view/object/?id=f19a35b7-bd77-4cff-b26b-a9a58666f571
https://nrc-publications.canada.ca/eng/view/object/?id=f19a35b7-bd77-4cff-b26b-a9a58666f571
Autor:
Brown, R. J. E., Williams, G. P.
It is estimated that peatland covers more than one million square kilometres of Canada, extending from the southernmost part of the country to the Arctic in the continuous permafrost zone. This terrain has been subjected to increasing scientific and
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https://nrc-publications.canada.ca/eng/view/object/?id=59048809-de38-4aa9-a4d5-23800e7d5637
https://nrc-publications.canada.ca/eng/view/object/?id=59048809-de38-4aa9-a4d5-23800e7d5637
Autor:
Brown, R. J. E.
One terrain feature of great significance to the extent, thickness and thermal regime of permafrost is vegetation. Its thermal properties determine the amount of heat leaving or entering the underlying ground. Vegetation has an indirect effect on cli
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https://nrc-publications.canada.ca/eng/view/object/?id=4c989143-5d15-4404-9363-db1742108798
https://nrc-publications.canada.ca/eng/view/object/?id=4c989143-5d15-4404-9363-db1742108798