The influence of heat extraction rate in freezing soils
The processes that are operative during fine-grained soil freezing with no applied surcharge are described and related to the rate of net heat extraction. One-dimensional frost heave experiments were carried out on a Canadian silty soil under various freezing conditions. It was established that the...
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1987
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20378587 2023-05-15T17:58:17+02:00 The influence of heat extraction rate in freezing soils Konrad, J. M. 1987 text https://nrc-publications.canada.ca/eng/view/ft/?id=a9c60202-9795-4dc6-9b28-c8f08d397fef https://nrc-publications.canada.ca/eng/view/object/?id=a9c60202-9795-4dc6-9b28-c8f08d397fef https://nrc-publications.canada.ca/fra/voir/objet/?id=a9c60202-9795-4dc6-9b28-c8f08d397fef eng eng issn:0165-232X Cold Regions Science and Technology, Volume: 14, Issue: 2, Publication date: 1987, Pages: 129–137 report_number:IRC-P-1535 permafrost soils heat transfer fine grained soils frozen soils freezing swelling pergélisol sol transfert de chaleur sol à grains fins sol gelé congélation (physique) gonflement (altération) fine-grained soils one-dimensional frost heave experiments Canadian silty soil segregational heave rate water flow transient freezing predictions article 1987 ftnrccanada 2021-09-01T06:34:25Z The processes that are operative during fine-grained soil freezing with no applied surcharge are described and related to the rate of net heat extraction. One-dimensional frost heave experiments were carried out on a Canadian silty soil under various freezing conditions. It was established that the segregational heave rate is strongly dependent on the rate of heat removal. No water flow was observed at heat extraction rates between 0.35 and 0.45 mW/mm2. Maximum segregational heave rates occurred at rates of about 0.1 mW/ mm2. For the same soil, however, significant variations in segregational heave rates were measured for a given heat removal rate during transient freezing. Frost heave predictions using freezing tests at rates of heat extraction representative of field conditions are also discussed. L'auteur décrit les processus qui interviennent pendant la congélation du sol à grains fins sans application de surcharge et il les met en rapport avec le taux d'extraction nette de chaleur. Des expériences de soulèvement unidimensionnel dû au gel ont été effectuées sur un sol canadien silteux dans diverses conditions de congélation. Il a été établi que le taux de soulèvement ségrégatif dépendait étroitement du taux d'extraction de chaleur. Aucun flux d'eau n'a été observé sous des taux d'extraction de chaleur variant entre 0,35 et 0,45 mW/mm2. Le soulèvement ségrégatif maximum s'est produit à des taux d'environ 0,1 mW/ mm2. Pour le même sol, toutefois, des variations importantes du taux de soulèvement ségrégatif one été observées, pour un taux d'extraction de chaleur donné, pendant la congélation transitoire. L'auteur traite aussi de la prévision du soulèvement dû au gel à l'aide d'essais de congélation sous des taux d'extraction de chaleur représentatifs des conditions de terrain. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper permafrost pergélisol National Research Council Canada: NRC Publications Archive |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
topic |
permafrost soils heat transfer fine grained soils frozen soils freezing swelling pergélisol sol transfert de chaleur sol à grains fins sol gelé congélation (physique) gonflement (altération) fine-grained soils one-dimensional frost heave experiments Canadian silty soil segregational heave rate water flow transient freezing predictions |
spellingShingle |
permafrost soils heat transfer fine grained soils frozen soils freezing swelling pergélisol sol transfert de chaleur sol à grains fins sol gelé congélation (physique) gonflement (altération) fine-grained soils one-dimensional frost heave experiments Canadian silty soil segregational heave rate water flow transient freezing predictions Konrad, J. M. The influence of heat extraction rate in freezing soils |
topic_facet |
permafrost soils heat transfer fine grained soils frozen soils freezing swelling pergélisol sol transfert de chaleur sol à grains fins sol gelé congélation (physique) gonflement (altération) fine-grained soils one-dimensional frost heave experiments Canadian silty soil segregational heave rate water flow transient freezing predictions |
description |
The processes that are operative during fine-grained soil freezing with no applied surcharge are described and related to the rate of net heat extraction. One-dimensional frost heave experiments were carried out on a Canadian silty soil under various freezing conditions. It was established that the segregational heave rate is strongly dependent on the rate of heat removal. No water flow was observed at heat extraction rates between 0.35 and 0.45 mW/mm2. Maximum segregational heave rates occurred at rates of about 0.1 mW/ mm2. For the same soil, however, significant variations in segregational heave rates were measured for a given heat removal rate during transient freezing. Frost heave predictions using freezing tests at rates of heat extraction representative of field conditions are also discussed. L'auteur décrit les processus qui interviennent pendant la congélation du sol à grains fins sans application de surcharge et il les met en rapport avec le taux d'extraction nette de chaleur. Des expériences de soulèvement unidimensionnel dû au gel ont été effectuées sur un sol canadien silteux dans diverses conditions de congélation. Il a été établi que le taux de soulèvement ségrégatif dépendait étroitement du taux d'extraction de chaleur. Aucun flux d'eau n'a été observé sous des taux d'extraction de chaleur variant entre 0,35 et 0,45 mW/mm2. Le soulèvement ségrégatif maximum s'est produit à des taux d'environ 0,1 mW/ mm2. Pour le même sol, toutefois, des variations importantes du taux de soulèvement ségrégatif one été observées, pour un taux d'extraction de chaleur donné, pendant la congélation transitoire. L'auteur traite aussi de la prévision du soulèvement dû au gel à l'aide d'essais de congélation sous des taux d'extraction de chaleur représentatifs des conditions de terrain. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Konrad, J. M. |
author_facet |
Konrad, J. M. |
author_sort |
Konrad, J. M. |
title |
The influence of heat extraction rate in freezing soils |
title_short |
The influence of heat extraction rate in freezing soils |
title_full |
The influence of heat extraction rate in freezing soils |
title_fullStr |
The influence of heat extraction rate in freezing soils |
title_full_unstemmed |
The influence of heat extraction rate in freezing soils |
title_sort |
influence of heat extraction rate in freezing soils |
publishDate |
1987 |
url |
https://nrc-publications.canada.ca/eng/view/ft/?id=a9c60202-9795-4dc6-9b28-c8f08d397fef https://nrc-publications.canada.ca/eng/view/object/?id=a9c60202-9795-4dc6-9b28-c8f08d397fef https://nrc-publications.canada.ca/fra/voir/objet/?id=a9c60202-9795-4dc6-9b28-c8f08d397fef |
genre |
permafrost pergélisol |
genre_facet |
permafrost pergélisol |
op_relation |
issn:0165-232X Cold Regions Science and Technology, Volume: 14, Issue: 2, Publication date: 1987, Pages: 129–137 report_number:IRC-P-1535 |
_version_ |
1766166868607893504 |