Measurement of the moisture storage capacity using sorption balance and pressure extractors

M. Janz, Björn Johannesson

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This paper presents measurements of the moisture storage capacity for several different porous building materials. The storage capacity is measured by a sorption balance in the hygroscopic range and with pressure plate and pressure membrane extractors in the superhygroscopic range. The results are presented both as retention curves and sorption isotherms and indicate, among other things, that some materials have a large hysteresis between absorption and desorption in the superhygroscopic range. This is contrary to what sometimes has been postulated.
Original languageEnglish
JournalJournal of Thermal Envelope and Building Science
Volume24
Issue number4
Pages (from-to)316-334
Number of pages19
ISSN1097-1963
DOIs
Publication statusPublished - 2001
Externally publishedYes

Keywords

  • moisture storage capacity
  • water retention curves
  • suction
  • sorption balance
  • pressure plate extractor
  • pressure membrane extractor

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