Location of segregated ice in frost-susceptible soil
X-ray photography has been used to locate the position of a growing ice lens in soil under laboratory conditions in order to establish the temperature of the actively growing face by means of its position in the thermal gradient field. It can be shown that in a general way the phase change temperatu...
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1981
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Online Access: | https://nrc-publications.canada.ca/eng/view/ft/?id=af566026-509e-41bd-8347-23f544946168 https://nrc-publications.canada.ca/eng/view/object/?id=af566026-509e-41bd-8347-23f544946168 https://nrc-publications.canada.ca/fra/voir/objet/?id=af566026-509e-41bd-8347-23f544946168 |
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20386528 2023-05-15T16:37:33+02:00 Location of segregated ice in frost-susceptible soil Penner, E. Goodrich, L. E. 1981-12 text https://nrc-publications.canada.ca/eng/view/ft/?id=af566026-509e-41bd-8347-23f544946168 https://nrc-publications.canada.ca/eng/view/object/?id=af566026-509e-41bd-8347-23f544946168 https://nrc-publications.canada.ca/fra/voir/objet/?id=af566026-509e-41bd-8347-23f544946168 eng eng issn:0013-7952 Engineering Geology, Volume: 18, Issue: 1-4, Publication date: 1981-12, Pages: 231–244 report_number:DBR-P-1021 permafrost pergélisol soils sol ice glace frost heaving foisonnement par le gel frozen soils sol gelé critical temperature température critique temperature range champ de température ice lens locating X-ray photography phase change temperature prediction heave rate equation article 1981 ftnrccanada 2021-09-01T06:33:55Z X-ray photography has been used to locate the position of a growing ice lens in soil under laboratory conditions in order to establish the temperature of the actively growing face by means of its position in the thermal gradient field. It can be shown that in a general way the phase change temperatures are predictable from the Clapeyron equation. The structure of the ice phase also appears to follow the predictions of the heave rate equation proposed by Penner and Ueda (1978). When heaving occurs at low overburden pressures, there is a tendency for the ice lens to be very discrete and essentially soil free; at higher pressures and under similar thermal gradients it tends to develop in a more diffuse band and over a much wider temperature range. On a repéré une lentille de glace en croissance dans le sol en conditions de laboratoire, par photographie aux rayons X, afin de connaître la température de la face en croissance active par sa position dans le champ du gradient thermique. On peut montrer qu'en général, les températures de changement de phase sont prévues par l'équation de Clapeyron. La structure de la phase solide semble également suivre l'équation du taux de soulèvement proposée par Penner et Ueda (1978). En cas de soulèvement sous de faibles pressions exercées par les terrains, les lentilles de glace ont tendance à être bien délimitées et à ne pas contenir de sol. Quand la pression est plus forte et le gradient thermique semblable, la lentille a tendance à former une bande plus diffuse, sur une gamme de températures beaucoup plus étendue. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Ice 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 pergélisol soils sol ice glace frost heaving foisonnement par le gel frozen soils sol gelé critical temperature température critique temperature range champ de température ice lens locating X-ray photography phase change temperature prediction heave rate equation |
spellingShingle |
permafrost pergélisol soils sol ice glace frost heaving foisonnement par le gel frozen soils sol gelé critical temperature température critique temperature range champ de température ice lens locating X-ray photography phase change temperature prediction heave rate equation Penner, E. Goodrich, L. E. Location of segregated ice in frost-susceptible soil |
topic_facet |
permafrost pergélisol soils sol ice glace frost heaving foisonnement par le gel frozen soils sol gelé critical temperature température critique temperature range champ de température ice lens locating X-ray photography phase change temperature prediction heave rate equation |
description |
X-ray photography has been used to locate the position of a growing ice lens in soil under laboratory conditions in order to establish the temperature of the actively growing face by means of its position in the thermal gradient field. It can be shown that in a general way the phase change temperatures are predictable from the Clapeyron equation. The structure of the ice phase also appears to follow the predictions of the heave rate equation proposed by Penner and Ueda (1978). When heaving occurs at low overburden pressures, there is a tendency for the ice lens to be very discrete and essentially soil free; at higher pressures and under similar thermal gradients it tends to develop in a more diffuse band and over a much wider temperature range. On a repéré une lentille de glace en croissance dans le sol en conditions de laboratoire, par photographie aux rayons X, afin de connaître la température de la face en croissance active par sa position dans le champ du gradient thermique. On peut montrer qu'en général, les températures de changement de phase sont prévues par l'équation de Clapeyron. La structure de la phase solide semble également suivre l'équation du taux de soulèvement proposée par Penner et Ueda (1978). En cas de soulèvement sous de faibles pressions exercées par les terrains, les lentilles de glace ont tendance à être bien délimitées et à ne pas contenir de sol. Quand la pression est plus forte et le gradient thermique semblable, la lentille a tendance à former une bande plus diffuse, sur une gamme de températures beaucoup plus étendue. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Penner, E. Goodrich, L. E. |
author_facet |
Penner, E. Goodrich, L. E. |
author_sort |
Penner, E. |
title |
Location of segregated ice in frost-susceptible soil |
title_short |
Location of segregated ice in frost-susceptible soil |
title_full |
Location of segregated ice in frost-susceptible soil |
title_fullStr |
Location of segregated ice in frost-susceptible soil |
title_full_unstemmed |
Location of segregated ice in frost-susceptible soil |
title_sort |
location of segregated ice in frost-susceptible soil |
publishDate |
1981 |
url |
https://nrc-publications.canada.ca/eng/view/ft/?id=af566026-509e-41bd-8347-23f544946168 https://nrc-publications.canada.ca/eng/view/object/?id=af566026-509e-41bd-8347-23f544946168 https://nrc-publications.canada.ca/fra/voir/objet/?id=af566026-509e-41bd-8347-23f544946168 |
genre |
Ice permafrost pergélisol |
genre_facet |
Ice permafrost pergélisol |
op_relation |
issn:0013-7952 Engineering Geology, Volume: 18, Issue: 1-4, Publication date: 1981-12, Pages: 231–244 report_number:DBR-P-1021 |
_version_ |
1766027846694731776 |