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Fuktupptagning i Svenskt barrvirke
Växjö University, Faculty of Mathematics/Science/Technology, Institutionen för industriella produktionssystem.
Växjö University, Faculty of Mathematics/Science/Technology, Institutionen för industriella produktionssystem.
2003 (Swedish)Independent thesis Basic level (degree of Bachelor)Student thesisAlternative title
Moisture absorbation in Swedish softwood (English)
Abstract [sv]

Två olika sorters träslag undersöktes, tall och gran, från Småland. Tall sorterades i kärna och splint medan gran sorterades i stående och liggande årsringar. Fuktupptagningslaborationen utfördes enligt standarden SS-EN 927-5:2000. Mätvärdena protokollfördes och diagram ritades upp med avseende på den procentuella vatten permeabiliteten. Vi dundersökning av tallen hade splinten den högre permeabiliteten, den kulminerade i genomsnitt vid 32% efter 96 timmar. Kärnan hade lägre permeabilitet, den kulminerade i medeltal 15%. Granproverna visade mycket liten skillnad på stående och liggande årsringar. Liggande årsringar hade något högre permeabilitet, kulminerade i ca 14% efter 96 timmar. Stående årsringar kulminerade i ca 13%. Det finns inget samband mellan densitet, årsringsbredd och fuktupptagning hos varken gran eller tall.

Abstract [en]

Two different woods were examined, pine and spruce, from Småland, Sweden. Pine was sorted in heartwood and sapwood whilst spruce was sorted in standing or laying anuual rings. The permeability laboratory test eas done according to the standard SS-EN 927-5:2000. The values were entered in the minutes and diagrams established over the percentage water permeability. The sapwood pf pine had the higher permeability; it culminated at 32% after 96 hours. The heartwood of pine had lower permeability; it culminated at 15%. With spruce there were little difference between laying and standing annual rings. The laying annual rings had somewhat more permeability than the standing ones; they culminated at 14% after 96 hours. Standing annual rings culminated at 13%. No relation could be found between density, annual ring width and permeability in both woods.

Place, publisher, year, edition, pages
Växjö: Institutionen för industriella produktionssystem , 2003. , p. 31
Keyword [en]
Permeability, softwood, spruce, pine, heartwood, s
Keyword [sv]
BYC990, Futupptagning, barrvirke, gran, tall, kärna, splin
Identifiers
URN: urn:nbn:se:vxu:diva-232OAI: oai:DiVA.org:vxu-232DiVA, id: diva2:206239
Available from: 2005-10-12 Created: 2005-10-12 Last updated: 2010-03-10Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf