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Effect of the crystallization of a solute on the cohesion in granular materials

Soulié, Fabien ; El Youssoufi, Moulay Saïd ; Delenne, Jean-Yves ; Voivret, Charles ; Saix, Christian

Powder technology, 2007-06, Vol.175 (1), p.43-47 [Periódico revisado por pares]

Lausanne: Elsevier B.V

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  • Título:
    Effect of the crystallization of a solute on the cohesion in granular materials
  • Autor: Soulié, Fabien ; El Youssoufi, Moulay Saïd ; Delenne, Jean-Yves ; Voivret, Charles ; Saix, Christian
  • Assuntos: Applied sciences ; Capillarity ; Cementation ; Chemical engineering ; Compression test ; Crystallization, leaching, miscellaneous separations ; Engineering Sciences ; Evaporation ; Exact sciences and technology ; Mechanics ; Mechanics of materials ; Miscellaneous ; Physics ; Solid-solid systems
  • É parte de: Powder technology, 2007-06, Vol.175 (1), p.43-47
  • Descrição: We study experimentally the macroscopic cohesion of wet granular materials during water evaporation and progressive crystallization of a solute between grains. The samples are wetted granular columns of cylindrical shape subjected to vertical compression tests. The compressive strength allows us to follow the evolution of the material from the capillary cohesion regime to the cemented cohesion regime. Surprisingly, we find that this transition is governed by a control parameter defined as the ratio of the crystallized solute mass to the total mass of the solute present in the sample rather than the absolute amount of the crystallized solute. We study experimentally the macroscopic cohesion of wet granular materials during water evaporation and progressive crystallization of a solute between grains. The samples are wetted granular columns of cylindrical shape subjected to vertical compression tests. The compressive strength allows us to follow the evolution of the material from the capillary cohesion regime to the cemented cohesion regime. Surprisingly, we find that this transition is governed by a control parameter i c defined as the ratio of the crystallized solute mass m NaCl S to the total mass of the solute m NaCl present in the sample rather than the absolute amount of the crystallized solute. [Display omitted]
  • Editor: Lausanne: Elsevier B.V
  • Idioma: Inglês
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