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Evidence for anomalous water vapor sorption kinetics in cement based materials

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Author

Summary, in English

We used dynamic sorption balance measurements to evaluate the diffusivity for cement pastes with three different binders (OPC, OPC + 70% slag, OPC + 10% silica fume). The diffusion of water vapor in cement based materials is normally assumed to follow Fick's law of diffusion, but our results clearly show that Ficles law cannot completely describe the sorption process in our materials. In this paper we report the evidence for this anomalous sorption behavior and discuss a possible method to evaluate diffusivities from such measurements. (C) 2015 Elsevier Ltd. All rights reserved.

Publishing year

2015

Language

English

Pages

60-66

Publication/Series

Cement and Concrete Research

Volume

70

Document type

Journal article

Publisher

Elsevier

Topic

  • Materials Engineering

Keywords

  • Cement pastes
  • Transport properties
  • Diffusion
  • Anomalous sorption

Status

Published

ISBN/ISSN/Other

  • ISSN: 0008-8846