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Test of four different experimental methods to determine sorption isotherms
Lund Institute of Technology.
Swedish Cement and Concrete Research Institute.
2002 (English)In: Journal of materials in civil engineering, ISSN 0899-1561, E-ISSN 1943-5533, Vol. 14, no 6, 471-477 p.Article in journal (Refereed) Published
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Abstract [en]

One important property of materials is their moisture fixation capacity, i.e., their ability to hold moisture at different relative humidities. The sorption isotherm is one of the main input data in moisture diffusion models, and it can also be used to evaluate properties of the microstructure. We have used four different methods to measure the sorption isotherm of sandstone and porous glass. The first method was to equilibrate samples over saturated salt solutions. The second was a sorption balance in which small material samples were weighed as they were exposed to different relative humidities. The third method was the pressure plate extractor, in which a totally wet sample was equilibrated at various overpressures, corresponding to certain relative humidities. The fourth method was a newly developed microcalorimetric technique to measure sorption isotherms. Despite the different natures of the methods, a satisfying agreement,was found.

Place, publisher, year, edition, pages
2002. Vol. 14, no 6, 471-477 p.
National Category
Construction Management
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-48737DOI: 10.1061/(ASCE)0899-1561(2002)14:6(471)OAI: oai:DiVA.org:lnu-48737DiVA: diva2:893493
Available from: 2016-01-12 Created: 2016-01-12 Last updated: 2016-01-18Bibliographically approved

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Johannesson, Björn
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Citation style
  • apa
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  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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  • text
  • asciidoc
  • rtf