Hostname: page-component-84b7d79bbc-g5fl4 Total loading time: 0 Render date: 2024-07-27T19:44:08.183Z Has data issue: false hasContentIssue false
  • English
  • Français

Influence de la lyophilisation sur la structure d'une argile sensible du Québec

Published online by Cambridge University Press:  09 July 2018

P. Delage  and
F. M. Pellerin
P. Delage
Affiliation:
Centre de Géologie de l' Ingénieur, Ecole des Mines, 60 Bd Saint-Michel, 75272 Paris Cedex 06, France
F. M. Pellerin
Affiliation:
Centre de Géologie de l' Ingénieur, Ecole des Mines, 60 Bd Saint-Michel, 75272 Paris Cedex 06, France
Get access Rights & Permissions [Opens in a new window]

Resume

L' étude de la structure d' une argile sensible du Québec est abordée en porosimétrie au mercure après lyophilisation et en microscopie électronique à balayage sur une surface obtenue par fracture de l' échantillon congelé (système Cryoscan). On observe une structure en agrégats définissant deux classes de pores. A grande vitesse de congélation, la cristallisation de la glace semble surtout affecter les points faibles de la structure, qui sont les ponts de plaquettes reliant les agrégats les uns aux autres.

Abstract

Abstract

The structure of a sensitive Québec clay was investigated using mercury intrusion porosimetry and scanning electron microscopy on a freeze-fractured sample (Cryoscan apparatus). An aggregated structure containing two pore populations was observed. Ice crystallization appeared to affect preferentially the points of weakness of the structure, which comprised inter-aggregate bridges formed by accumulations of clay platelets.

Type
Research Article
Information
Clay Minerals , Volume 19 , Issue 2 , April 1984 , pp. 151 - 160
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1984

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bibliographie

Ahmed, S., Lovell, C.W. & Diamond, S. (1974) Pore size and strength of compacted clay. ASCE J. Eng. Geotech. Div. 100, 407–425.Google Scholar
Delage, P. (1979) Etude du milieu poreux et de la texture d'argiles sensibles du Québec. Thèse Doct.-Ing., C.G.I., Ecole des Mines Paris.Google Scholar
Delage, P., Tessier, D. & Marcel-Audiguier, M. (1982) Use of the Cryoscan apparatus for observation of freeze-fractured planes of a sensitive Québec clay in scanning electron microscopy. Rev. Can. Geotech. 19, 111–114.Google Scholar
Diamond, S. (1970) Pore-size distribution in clays. Clays Clay Miner. 18, 7–23.Google Scholar
Foscal-Mella, G. (1976) Analyse Minéralogique des argiles glaciaires. Thèse M.Sc, Univ. Montreal.Google Scholar
Garcia-Bengochea, I., Lovell, C.W. & Altschaefel, A.G. (1979) Pore distribution and permeability of silty clays. ASCE J. Eng. Div. 105, 407–425.Google Scholar
Gillott, J.E. (1969) Study of the fabric of fine-grained sediments with scanning electron microscope. J. Sediment. Petrol. 39, 90–105.Google Scholar
Gillott, J.E. (1976) Importance of specimen preparation in microscopy. ASTM STP 599, 289–307.Google Scholar
Greene-Kelly, R. (1973) The preparation of clay soils for determination of structure. J. Soil Sci. 24, 277–283.CrossRefGoogle Scholar
Lawrence, J.P. (1978) Stability of soil pores during mercury intrusion porosimetry. J. Soil Sci. 29, 299–304.Google Scholar
Lawrence, G.P., Payne, D. & Greenland, D.J. (1979) Pore-size distribution in critical point and freeze-dried aggregates from clay subsoils. J. Soil Sci. 30, 499–516.CrossRefGoogle Scholar
Lefebvre, G. & Poulin, C. (1979) A new method of sampling in sensitive clays. Rev. Can. Geotech. 16, 226–233.CrossRefGoogle Scholar
Locat, J. (1982) Etude de la structuration des argiles sensibles. Thèse Ph.D., Univ. Sherbrooke, Canada.Google Scholar
Murray, R.S. & Quirk, J.P. (1980) Freeze-dried and critical point dried clay: a comparison. Soil Sci. Soc. Am. J. 44, 232–234.Google Scholar
Pellerin, F.M. (1979) La porosimétrie au mercure appliquée à l'etude geotechnique des sols et des roches. Bull. Liaison Lab. Fonts et Chaussées 106, 105–116.Google Scholar
Pusch, R. (1970) Microstructural changes in soft quick clay at failure. Rev. Can. Geotech. 7, 1–7.Google Scholar
Tessier, D. & Berrier, J. (1978) Observation d'argiles hydratées en microscopie electronique à balayage. Importance et choix de la technique de preparation. Proc. Vth Int. Work.-Meet. Soil Micromorphology. Granada, 117–135.Google Scholar
Tourenq, C. (1970) La Gàlività des Roches. Rapport Recherche, Lab. Ponts et Chaussées, Paris.Google Scholar
Tovey, D. & Wong, K.Y. (1973) The preparation of soils and other geological materials for the S.E.M. Proc. Int. Symp. Soil Structure, Gothenburg, 59–67.Google Scholar