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Article
Effect of humidity instability on rehydroxylation in fired clay ceramics
Journal of the American Ceramic Society
  • Timothy Scarlett, Michigan Technological University
  • Jaroslaw W. Drelich, Michigan Technological University
  • Patrick Bowen, Michigan Technological University
Document Type
Article
Publication Date
3-15-2013
Abstract
Several samples of the XIX-century Davenport pottery and XX-century structural masonry were reheated at 500°C and then exposed to a humid gas of controlled relative humidity. Changes in the sample masses were recorded in response to both systematic and transient step changes in humidity. In addition, a reheated masonry sample underwent a sequence of soaking and drying and hundreds of hours of interactions with humid air in between these treatments to examine long-term effects of extreme humidity fluctuations. All experimental results indicate that instantaneous humidity and the sample's hygral history have a negligible effect on the long-term kinetics of mass gain. This important finding provides strong experimental support for the newly developed rehydroxylation (RHX) ceramic dating technique by proving that humidity affects physically bonded water in the ceramics, but has a negligible effect on chemically bonded water.
Publisher's Statement

© John Wiley & Sons, Inc. Publisher's version of record: https://dx.doi.org/10.1111/jace.12262

Citation Information
Timothy Scarlett, Jaroslaw W. Drelich and Patrick Bowen. "Effect of humidity instability on rehydroxylation in fired clay ceramics" Journal of the American Ceramic Society Vol. 96 Iss. 4 (2013) p. 1047 - 1050
Available at: http://works.bepress.com/timothy-scarlett/8/