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Shape stability of modified engineering wood product subjected to moisture variation
Linnéuniversitetet.
Linnéuniversitetet.
Linnéuniversitetet.
2011 (English)In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 6, no 3, p. 132-139Article in journal (Refereed) Published
Abstract [en]

A modified softwood product would enable the utilization of softwood in new areas. Densification is an old modification method to improve wood properties such as hardness and resistance to abrasion. A major problem with densified wood is, however, its ability to retain its original dimensions under the influence of moisture. Therefore, this study investigated the influence of surface to bottom layer thickness ratio on the shape stability of a modified and three-layered cross-laminated engineering wood product (EWP) subjected to moisture variations. The study describes a simple solid wood densification technique based on compressing a clear solid piece of softwood with vertical annual rings in the radial direction by restraining the tangential expansion. Three-layered cross-laminated EWP was manufactured with the densified wood as a surface layer. The recovery of the densified wood in the surface layer was then reduced to movements in the same level as the other two layers of unmodified wood. The EWP was subjected to climatic variations in order to investigate its shape stability. The results disclosed that an appreciable degree of shape stability was obtained by an increase in the surface to bottom layer thickness ratio of the EWP

Place, publisher, year, edition, pages
2011. Vol. 6, no 3, p. 132-139
Identifiers
URN: urn:nbn:se:ltu:diva-3463DOI: 10.1080/17480272.2011.552122Local ID: 149e2838-3b33-4106-9965-6a6eaac8da8dOAI: oai:DiVA.org:ltu-3463DiVA, id: diva2:976321
Note
Upprättat; 2011; 20130910 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Sandberg, Dick

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  • nn-NB
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