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Sušilne lastnosti kompresijskega lesa : diplomsko delo
ID Strle, Tomo (Author), ID Gorišek, Željko (Mentor) More about this mentor... This link opens in a new window, ID Čufar, Katarina (Reviewer)

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MD5: A17D7B2D87E75A4A54ACC5A712388DB0
PID: 20.500.12556/rul/e85993f3-3eec-449b-98bf-9c2793e9b6a2

Abstract
Ugotavljali smo razlike v fizikalnih lastnostih normalnega in kompresijskega lesa smreke (Picea abies Karst.). Gostota kompresijskega lesa je bila nekoliko večja, volumenski, radialni in tangencialni skrčki pa so bili za polovico manjši kot pri normalnem lesu. Krčenje kompresijskega lesa v vzdolžni smeri je bilo kar 6x večje kot pri normalnem. Naše raziskave so potrdile znatne razlike v sušilnih lastnostih normalnega in kompresijskega lesa. Pri kompresijskem smo izmerili nekoliko manjšo prepustnost za pline v prečnih smereh in 6x manjšo prepustnost za pline v smeri vlaken. Kompresijski les se v higroskopnem območju počasnejše suši, ima pa tudi manjši difuzijski koeficient, merjen v radialni smeri.

Language:Slovenian
Keywords:les, kompresijski les, sušenje, krčenje, dimenzijska stabilnost, difuzivnost, permeabilnost, Picea abies Karst.
Work type:Undergraduate thesis
Typology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Place of publishing:Ljubljana
Publisher:[T. Strle]
Year:2008
Number of pages:IX, 41 f.
PID:20.500.12556/RUL-297 This link opens in a new window
UDC:630*847
COBISS.SI-ID:1659273 This link opens in a new window
Publication date in RUL:11.07.2014
Views:1896
Downloads:284
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Secondary language

Language:English
Title:Drying characteristics of compression wood : univerzitetni študij
Abstract:
Differences in physical properties of normal and compression wood of spruce (Picea abies Karst.) were studied. The density of compression wood compared to the normal was slightly higher. The volume, radial and tangential shrinkage of compression wood with respect to the normal wood was half smaller, while shrinkage in longitudinal direction was 6x greater than that of the normal wood. Our research confirmed also a significant difference in drying characteristics of normal and compression wood. Compression wood, compared to normal secondary xylem of spruce, has slightly lower gas permeability in transverse direction, and more than 6x lower gas permeability in fiber direction. Slower drying of compression wood in hygroscopic range was also confirmed, as well as lower diffusion coefficient measured in radial direction.

Keywords:wood, compression wood, drying, shrinkage, dimensional stability, diffusivity, permeability, Picea abies Karst.

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