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Reactive plasticity for clays: Application to a natural analog of longterm geomechanical effects of nuclear waste disposal

Publication ,  Journal Article
Hueckel, T; Pellegrini, R
Published in: Engineering Geology
May 1, 2002

Long-term changes in mechanical properties of clays induced by heating are investigated based on findings at Orciatico site of natural analog of nuclear waste disposal. To quantify the extent of such changes, a chemo-thermo-plastic model for illitization and re-smectitization of clays [Int. J. Plast. (2000)] is used. The model is an extension of Cam-clay model. Identification of parameters is presented for the material from one peripheral borehole where temperatures developed in clay near the contact were in the analogy range. Short-term heating experiments on previously thermally unaffected specimens were used to identify thermal softening characteristics. Apparent maximum past precompression stress was determined throughout the borehole. Hypothetical history of the clay in the borehole including pre-loading, heating, cooling and mineralogical reaction was reconstructed, and the apparent maximum past precompression stress data were used to identify the characteristics of chemical softening function describing the long-term clay transformations. © 2002 Elsevier Science B.V. All rights reserved.

Duke Scholars

Published In

Engineering Geology

DOI

ISSN

0013-7952

Publication Date

May 1, 2002

Volume

64

Issue

2-3

Start / End Page

195 / 215

Related Subject Headings

  • Geological & Geomatics Engineering
  • 4019 Resources engineering and extractive metallurgy
  • 4005 Civil engineering
  • 3705 Geology
  • 0999 Other Engineering
  • 0909 Geomatic Engineering
  • 0905 Civil Engineering
 

Citation

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Hueckel, T., & Pellegrini, R. (2002). Reactive plasticity for clays: Application to a natural analog of longterm geomechanical effects of nuclear waste disposal. Engineering Geology, 64(2–3), 195–215. https://doi.org/10.1016/S0013-7952(01)00114-4
Hueckel, T., and R. Pellegrini. “Reactive plasticity for clays: Application to a natural analog of longterm geomechanical effects of nuclear waste disposal.” Engineering Geology 64, no. 2–3 (May 1, 2002): 195–215. https://doi.org/10.1016/S0013-7952(01)00114-4.
Hueckel, T., and R. Pellegrini. “Reactive plasticity for clays: Application to a natural analog of longterm geomechanical effects of nuclear waste disposal.” Engineering Geology, vol. 64, no. 2–3, May 2002, pp. 195–215. Scopus, doi:10.1016/S0013-7952(01)00114-4.
Journal cover image

Published In

Engineering Geology

DOI

ISSN

0013-7952

Publication Date

May 1, 2002

Volume

64

Issue

2-3

Start / End Page

195 / 215

Related Subject Headings

  • Geological & Geomatics Engineering
  • 4019 Resources engineering and extractive metallurgy
  • 4005 Civil engineering
  • 3705 Geology
  • 0999 Other Engineering
  • 0909 Geomatic Engineering
  • 0905 Civil Engineering