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Expansion of Cementitious Materials Exposed to Sulfate Solutions

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Abstract

Disposal of low-level radioactive waste in concrete vaults buried underground is being considered in the United States and apotentially significant degradationprocess is sulfate attack. The results of experimental studies and of modeling of the kinetics of sulfate attack of cement-based materials are given. It was concluded that the expansionprocess involves a two-stage mechanism. The first stage is likely to be diffusion controlled and the second stage appears to be acceleratory due to the development and spread of cracks.

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Authors and Affiliations

  1. Civil Engineering Dept., Bucknell University, Lewisburg, PA, 17837, USA

    James M. Pommersheim

  2. National Institute of Science and Technology, Gaithersburg, MD, 20899, USA

    James R. Clifton

Authors
  1. James M. Pommersheim
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  2. James R. Clifton
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Pommersheim, J.M., Clifton, J.R. Expansion of Cementitious Materials Exposed to Sulfate Solutions. MRS Online Proceedings Library 333, 363–368 (1993). https://doi.org/10.1557/PROC-333-363

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  • DOI: https://doi.org/10.1557/PROC-333-363

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