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Microstructure and brittle behaviour of fine grain calcite (micrite)

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Abstract

Micrites are natural materials formed by sedimentation in ancient seas. They are generally characterized by a fine grain size and a high compactness. Electron microscopy observations reveal many coincidence boundaries between adjacent grains which allow one to propose a more precise mechanism for the genesis of this material, especially for its high compactness. Moreover, compression tests at various temperatures indicate that micrites are very brittle forT < 300° C. The fracture propagation mechanisms are discussed with the help of the observed microstructure.

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Authors and Affiliations

  1. Laboratoire de Structure et Propriétés de l'Etat Solide (L.A. au CNRS 234), Université des Sciences et Techniques de Lille, 59650, Villeneuve D'Ascq, France

    J. C. Doukhan, J. P. Henry & J. Paquet

Authors
  1. J. C. Doukhan
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  2. J. P. Henry
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  3. J. Paquet
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Doukhan, J.C., Henry, J.P. & Paquet, J. Microstructure and brittle behaviour of fine grain calcite (micrite). J Mater Sci 11, 1884–1892 (1976). https://doi.org/10.1007/BF00708267

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  • DOI: https://doi.org/10.1007/BF00708267

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