Analysis of moisture flow in porous materials using microfocus X-ray radiography

S. Roels, J. Carmeliet

Research output: Contribution to journalArticleAcademicpeer-review

108 Citations (Scopus)
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Abstract

Microfocus X-ray projection is presented as an accurate experimental technique for measuring moisture transport processes in porous materials. The technique has evolved from the better-known medical technique. Compared to classical ?-ray and NMR-techniques it allows an instant and accurate determination of the two-dimensional transient moisture content profiles. A calibration procedure is presented to optimise the resolution in moisture content by choosing an adequate sample thickness in relation to the energy of the X-ray source. To illustrate the capabilities of the X-ray projection method, examples of two-dimensional liquid water uptake in homogeneous, heterogeneous, micro- and macro-fractured materials are presented.
Original languageEnglish
Pages (from-to)4762-4772
Number of pages11
JournalInternational Journal of Heat and Mass Transfer
Volume49
Issue number25-26
DOIs
Publication statusPublished - 2006

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