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Träfflista för sökning "WFRF:(Svennberg Lars) srt2:(2000-2004)"

Sökning: WFRF:(Svennberg Lars) > (2000-2004)

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1.
  • Svennberg, Kaisa, et al. (författare)
  • A modified cup-method for lightweight and highly permeable materials
  • 2003
  • Ingår i: Research in Building Physics. - 9789058095657 - 9058095657 ; , s. 177-182
  • Konferensbidrag (refereegranskat)abstract
    • With an increasing interest for dynamic hygrothermal calculation models for short time periods, there is a need for uncomplicated and reliable methods to determine the moisture properties for materials used in the indoor environment. The traditional cup-method is commonly used for building materials to determine the water vapor permeability. When used on lightweight and highly permeable materials, the unidentified inner surface resistance of the cup-method will be problematic and fastening the sample to the cup can be troublesome. To address these problems, we have developed a modified cup-method based on standard laboratory crimp cap vials to determine the water vapor resistance for lightweight and highly permeable materials, such as textiles and paper. This modified cup-method together with a validation is presented in the paper.
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2.
  • Wadsö, Lars, et al. (författare)
  • An experimentally simple method for measuring sorption isotherms
  • 2004
  • Ingår i: Drying Technology. - 1532-2300. ; 22:10, s. 2427-2440
  • Tidskriftsartikel (refereegranskat)abstract
    • We describe a simple, yet practical and precise. way of measuring sorption isotherms with each sample in its own glass jar with a saturated salt solution. The measurements are done with below-balance weighing and with the sample kept inside the closed jar during the whole measurement period, providing constant relative humidity (RH) conditions. The technique has been tested on microcrystalline cellulose and bentonite clay. The agreement with literature values was good; the differences seen for bentonite at high RH are discussed in terms of the slow attainment of equilibrium for this material.
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  • Resultat 1-2 av 2
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konferensbidrag (1)
tidskriftsartikel (1)
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refereegranskat (2)
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Wadsö, Lars (2)
Svennberg, Kaisa (2)
Dueck, Ann (1)
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Lunds universitet (2)
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Engelska (2)
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