Methods of determining creep, long-term strength and compressibility characteristics of frozen soils
Frozen soils consisting of ice and unfrozen water possess clearly defined rheological properties. The evaluation of strength involves determining the load at which, over a given period of time, a state of equilibrium exists, which, if exceeded, causes failure. When evaluating frozen soils for deform...
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ftdatacite:10.4224/20386669 2023-05-15T16:37:51+02:00 Methods of determining creep, long-term strength and compressibility characteristics of frozen soils Vyalov, S. S. Gorodetskii, S. E. Ermakov, V. F. Zatsarnaya, A. G. Pekarskaya, N. K. National Research Council Of Canada. Division Of Building Research 1969 https://dx.doi.org/10.4224/20386669 https://nrc-publications.canada.ca/eng/view/object/?id=14d51ca2-bade-40d0-a9e9-0bb7de42437b en eng National Research Council of Canada permafrost soils frozen soils creep creep tests creep strength pergélisol sol sol gelé fluage essai de fluage résistance au fluage Text Report report ScholarlyArticle 1969 ftdatacite https://doi.org/10.4224/20386669 2021-11-05T12:55:41Z Frozen soils consisting of ice and unfrozen water possess clearly defined rheological properties. The evaluation of strength involves determining the load at which, over a given period of time, a state of equilibrium exists, which, if exceeded, causes failure. When evaluating frozen soils for deformation the load calculated is that at which the deformation reached is the maximum permissible for the structure. Equations are developed that give deformation patterns for frozen soil. Frozen soil testing for deformation may be conducted with both disturbed and undisturbed samples but the soil temperatures must be kept constant. The main features of creep curves are obtained from compression tests in the laboratory on a series of similar samples. Results are plotted of time versus deformation. At large loads an S-shaped curve is obtained showing a large deformation with complete failure occurring in a short time. For intermediate loads there is again the instantaneous deformation, followed by a very small deformation with time but at the end deformation accelerates and failure ensues. For smaller loads the instantaneous deformation occurs but this is followed by a very long period of very small or no deformation. The nature of the curves for any moment of time depends on soil type but the general pattern always remains the same. Usually an exponential relationship is assumed. Report Ice permafrost pergélisol DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
English |
topic |
permafrost soils frozen soils creep creep tests creep strength pergélisol sol sol gelé fluage essai de fluage résistance au fluage |
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permafrost soils frozen soils creep creep tests creep strength pergélisol sol sol gelé fluage essai de fluage résistance au fluage Vyalov, S. S. Gorodetskii, S. E. Ermakov, V. F. Zatsarnaya, A. G. Pekarskaya, N. K. National Research Council Of Canada. Division Of Building Research Methods of determining creep, long-term strength and compressibility characteristics of frozen soils |
topic_facet |
permafrost soils frozen soils creep creep tests creep strength pergélisol sol sol gelé fluage essai de fluage résistance au fluage |
description |
Frozen soils consisting of ice and unfrozen water possess clearly defined rheological properties. The evaluation of strength involves determining the load at which, over a given period of time, a state of equilibrium exists, which, if exceeded, causes failure. When evaluating frozen soils for deformation the load calculated is that at which the deformation reached is the maximum permissible for the structure. Equations are developed that give deformation patterns for frozen soil. Frozen soil testing for deformation may be conducted with both disturbed and undisturbed samples but the soil temperatures must be kept constant. The main features of creep curves are obtained from compression tests in the laboratory on a series of similar samples. Results are plotted of time versus deformation. At large loads an S-shaped curve is obtained showing a large deformation with complete failure occurring in a short time. For intermediate loads there is again the instantaneous deformation, followed by a very small deformation with time but at the end deformation accelerates and failure ensues. For smaller loads the instantaneous deformation occurs but this is followed by a very long period of very small or no deformation. The nature of the curves for any moment of time depends on soil type but the general pattern always remains the same. Usually an exponential relationship is assumed. |
format |
Report |
author |
Vyalov, S. S. Gorodetskii, S. E. Ermakov, V. F. Zatsarnaya, A. G. Pekarskaya, N. K. National Research Council Of Canada. Division Of Building Research |
author_facet |
Vyalov, S. S. Gorodetskii, S. E. Ermakov, V. F. Zatsarnaya, A. G. Pekarskaya, N. K. National Research Council Of Canada. Division Of Building Research |
author_sort |
Vyalov, S. S. |
title |
Methods of determining creep, long-term strength and compressibility characteristics of frozen soils |
title_short |
Methods of determining creep, long-term strength and compressibility characteristics of frozen soils |
title_full |
Methods of determining creep, long-term strength and compressibility characteristics of frozen soils |
title_fullStr |
Methods of determining creep, long-term strength and compressibility characteristics of frozen soils |
title_full_unstemmed |
Methods of determining creep, long-term strength and compressibility characteristics of frozen soils |
title_sort |
methods of determining creep, long-term strength and compressibility characteristics of frozen soils |
publisher |
National Research Council of Canada |
publishDate |
1969 |
url |
https://dx.doi.org/10.4224/20386669 https://nrc-publications.canada.ca/eng/view/object/?id=14d51ca2-bade-40d0-a9e9-0bb7de42437b |
genre |
Ice permafrost pergélisol |
genre_facet |
Ice permafrost pergélisol |
op_doi |
https://doi.org/10.4224/20386669 |
_version_ |
1766028156581445632 |