Interpretation of the impedance spectroscopy of cement paste via computer modelling - Part II Dielectric response

R. T. Coverdale, B. J. Christensen, Thomas O Mason, H. M. Jennings, E. J. Garboczi

Research output: Contribution to journalArticle

53 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)4984-4992
Number of pages9
JournalJournal of Materials Science
Volume29
Issue number19
DOIs
Publication statusPublished - Oct 1994

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)

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