Determination of moisture diffusivity in porous media using scanning neutron radiography

L. Pel, A.A.J. Ketelaars, O.C.G. Adan, A.A. van Well

Research output: Contribution to journalArticleAcademicpeer-review

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A technique for measuring moisture concentration profiles based on scanning neutron radiography is presented. With this technique moisture concentration profiles have been measured during drying of brick and kaolin clay. The isothermal moisture diffusivity as a function of moisture content could be determined directly from these profiles. An error analysis shows that the minimum spatial resolution for scanning should be 0.5 mm. If this condition is not satisfied, it is not possible, for example, to detect the minimum in the moisture diffusivity in the case of a receding drying front.
Original languageEnglish
Pages (from-to)1261-1267
Number of pages7
JournalInternational Journal of Heat and Mass Transfer
Issue number5
Publication statusPublished - 1993


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