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Document IIF

Etude expérimentale du processus de détérioration du gel dans des matériaux poreux au cours de la congélation.

Experimental study of frost deterioration process of porous materials during freezing.

Auteurs : ISHIZAKI T.

Résumé

There are many stone monuments carved in tuff in Japan, most of which are in fields where subzero temperatures are expected. The typical destructive deterioration of stone monuments is considered to be due to frost heaving phenomena. To clarify the frost heave mechanism, an experimental apparatus was developed to observe ice segregation process by microscope and digital video system. This system allowed to observe ice segregation process at constant temperature gradient and freezing speed. By analyzing digital video images, ice lens thickness and ice segregation speed were obtained. The segregation temperature was also obtained from temperature profile of the sample, and compared with a theoretical value from Clapeyron equation. The experimental results showed that this experimental apparatus is quite effective to study the frost heave process.

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Format PDF

Pages : 41-45

Document à numériser, disponible sous dix jours

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Experimental study of frost deterioration process of porous materials during freezing.
  • Identifiant de la fiche : 2001-1112
  • Langues : Anglais
  • Source : Permafrost and Actions of Natural or Artificial Cooling
  • Date d'édition : 21/10/1998
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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