Zobrazeno 1 - 9
of 9
pro vyhledávání: '"congélation (physique)"'
The time-domain reflectometry technique was compared with the temperature measurement method for locating the frozen- unfrozen interface in water and sandy soils. This technique depends on the high-frequency (1-1000 MHz) electrical properties of wate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::9807c026d1495ab86dce565fd5ba0059
https://nrc-publications.canada.ca/eng/view/object/?id=085a9ec9-d94f-405d-a13d-8e7c0f0ccfd5
https://nrc-publications.canada.ca/eng/view/object/?id=085a9ec9-d94f-405d-a13d-8e7c0f0ccfd5
Autor:
Parameswaran, V. R., Mackay, J. R.
Electrical potentials developed during freezing of natural soils have been measured in two permafrost areas: one in a saturated sand in a drained lake (Illisarvik) on Richards Island where permafrost was aggrading downward 5.65 m below ground; the ot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::c537cc0fb3bb32a3ad5d9cf78933cb0b
https://nrc-publications.canada.ca/eng/view/object/?id=ff330ce3-2067-43bb-9fcf-24cc0f4796ae
https://nrc-publications.canada.ca/eng/view/object/?id=ff330ce3-2067-43bb-9fcf-24cc0f4796ae
Autor:
Konrad, J. M.
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::180f4d2d24402ad733a1922a35d793b1
https://nrc-publications.canada.ca/eng/view/object/?id=a9c60202-9795-4dc6-9b28-c8f08d397fef
https://nrc-publications.canada.ca/eng/view/object/?id=a9c60202-9795-4dc6-9b28-c8f08d397fef
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::ea53fb434da73f8aeb80307678cef7ad
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
Some aspects of the general theory of frost heaving are not consistent with the way water moves in saturated material, hence a new theory is presented based on the absorption forces of water on surfaces. Water molecules, being dipolar, arrange themse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::891c648696618a55a6a6a485019dcc0f
https://doi.org/10.4224/20359154
https://doi.org/10.4224/20359154
Autor:
Latta, J. K.
The harmful effects of water on building materials can hardly be over-emphasized. This Digest is intended to draw attention to these destructive mechanisms and to give a brief account of some of the phenomena involved.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::dbb836aca8f1b0c650421a6fa8ff635d
https://nrc-publications.canada.ca/eng/view/object/?id=1cba1306-1a3d-422c-9936-f45754a5ab08
https://nrc-publications.canada.ca/eng/view/object/?id=1cba1306-1a3d-422c-9936-f45754a5ab08
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::0b79a12d465beabba1d67b70fb15cbb2
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
The force exerted on an object on the ground or buried in the ground is the heaving force due to freezing. The smaller the extent of heaving permitted the greater the heaving force. The maximum force when no heaving is permitted can be divided into t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::9da7eaf498be54c48623ebe5aab676b6
https://nrc-publications.canada.ca/eng/view/object/?id=e8c1df3c-4aaa-4169-bc8e-d2a5c0e6ca63
https://nrc-publications.canada.ca/eng/view/object/?id=e8c1df3c-4aaa-4169-bc8e-d2a5c0e6ca63
Autor:
Latta, J. K.
On ne peut pas sous-estimer les effets nuisibles de l'eau sur les matériaux de construction. Le but du présent Digeste est de donner un apercu des mécanismes destructeurs de l'eau et de passer rapidement en revue certains des phénomènes impliqu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::886fcffd0c0ff8089ed30852b8eef84a
https://doi.org/10.4224/40000894
https://doi.org/10.4224/40000894