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Journal of Materials Science

, Volume 29, Issue 19, pp 4984–4992 | Cite as

Interpretation of the impedance spectroscopy of cement paste via computer modelling

Part II Dielectric response
  • R. T. Coverdale
  • B. J. Christensen
  • T. O. Mason
  • H. M. Jennings
  • E. J. Garboczi
Papers

Abstract

Dielectric properties of cement pastes are measured using impedance spectroscopy, and the effective dielectric constants of the low frequency bulk arcs are reported. The unusually high values thereby obtained, and their dependence on reaction time and water:cement ratio, are explained by the presence of microstructural features that serve to amplify the dielectric constants of the individual material phases. The dielectric properties of three-dimensional cement paste models and of simple two-dimensional models of the hypothesized microstructural features are analysed. The model results provide insight into the proposed dielectric amplification mechanism in real cement paste.

Keywords

Polymer Spectroscopy Reaction Time Dielectric Constant Computer Modelling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • R. T. Coverdale
    • 1
  • B. J. Christensen
    • 1
  • T. O. Mason
    • 1
  • H. M. Jennings
    • 1
    • 2
  • E. J. Garboczi
    • 3
  1. 1.Departments of Materials Science and EngineeringNorthwestern UniversityEvanstonUSA
  2. 2.Departments of Materials Science and Civil EngineeringNorthwestern UniversityEvanstonUSA
  3. 3.Building Materials DivisionNational Institute of Standards and TechnologyGaithersburgUSA

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