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Extraction of Elastic Moduli From Granular Compacts

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Abstract

The precipitation of crystals in certain solid nucleation processes can lead to subcritical failure. An important case is that of ettringite crystals in hardened concrete which, when exposed to sulfate attack, can lead to cracking of the structure. In order to conduct micromechanical modeling of this deterioration process, it is necessary to know the elastic moduli of ettringite. However, due to the difficulty in obtaining crystals large enough to conduct mechanical tests, the elastic moduli of ettringite remain unknown. The focus of this communication is to report estimates on the elastic moduli of ettringite, which are determined by solving an inverse formulation, where only the experimentally measured effective responses of porous ettringite compacts are known. The inverse solution is obtained by using a probabilistic genetic search algorithm.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of California, 6195 Etcheverry Hall, Berkeley, CA, 94720-1740, USA, e-mail

    T. I. Zohdi

  2. Department of Civil and Environmental Engineering, University of California, 725 Davis Hall, Berkeley, CA, o94720-1740, USA, e-mail

    P. J. M. Monteiro & V. Lamour

Authors
  1. T. I. Zohdi
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  2. P. J. M. Monteiro
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  3. V. Lamour
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Zohdi, T.I., Monteiro, P.J.M. & Lamour, V. Extraction of Elastic Moduli From Granular Compacts. International Journal of Fracture 115, 49–54 (2002). https://doi.org/10.1023/A:1022688407937

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  • DOI: https://doi.org/10.1023/A:1022688407937

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