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Changes in microstructure of fine‐grained soils due to freezing

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  • S. E. Grechishchev
  • A. V. Pavlov
  • V. V. Ponomarev

Abstract

A microstructural model of thermorheological processes during the freezing of fine‐grained soils is described. Using electron microscopy and X‐ray diffractometry, the changes due to freezing in the microstructures of kaolin, bentonite and askangel were experimentally studied. Curves of aggregate distribution and pore size for different freezing periods are presented. It is shown that there is good agreement between experimental results and theoretical hypotheses. Un modèle microstructural des processus thermorhéologiques se produisant pendant le gel des sols à granulométrie fine est décrit. En utilisant la microscopie électronique et la diffractométrie par rayons X, les changements dus au gel dans la microstructure du kaolin, de la bentonite et de l' “askangel” ont été eludiés experimentalement. Des courbes de la distribution des agrégats et de la taille des pores après différentes périodes de gel sont présentées. Il y a un bon accord entre les résultats expérimentaux et les hypothèses théoriques.

Suggested Citation

  • S. E. Grechishchev & A. V. Pavlov & V. V. Ponomarev, 1992. "Changes in microstructure of fine‐grained soils due to freezing," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 3(1), pages 1-10, January.
    • Handle: RePEc:wly:perpro:v:3:y:1992:i:1:p:1-10
    DOI: 10.1002/ppp.3430030102
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