Determination of water vapor diffusion and partition coefficients in cement using one FLEC

R. Luo, Jianlei Niu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)

Abstract

Water vapor diffusion and partition coefficients in cement slabs were determined by solving the inverse problem of one-dimensional unsteady mass diffusion based on measurements of the concentration of water vapor in a field and laboratory emission cell (FLEC) system. A solution for multi-process mass diffusion was obtained to analyze the influence of the non-uniform initial water vapor concentration distribution on the determination of diffusion and partition coefficients. The main factors affecting the accuracy of the diffusion and partition coefficients were discussed. Good agreement between the measured data and the predictions of the inverse problems showed that the mass diffusion in the cement slabs could be described accurately by the one-dimensional model.
Original languageEnglish
Pages (from-to)2061-2072
Number of pages12
JournalInternational Journal of Heat and Mass Transfer
Volume47
Issue number10-11
DOIs
Publication statusPublished - 1 Jan 2004

Keywords

  • Cement
  • Diffusion coefficient
  • FLEC
  • Mass diffusion
  • Partition coefficient
  • Water vapor

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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