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Wood construction under cold climate: Part one: Impact of cold temperatures on the shear strength of different adhesives glued wood joints of Norway spruce and Scots pine
Luleå University of Technology, Sweden.
Luleå University of Technology, Sweden.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Trä.
DTU Technical University of Denmark, Denmark.
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2014 (English)In: WCTE 2014 - World Conference on Timber Engineering, Proceedings, World Conference on Timber Engineering (WCTE) , 2014Conference paper, Published paper (Refereed)
Abstract [en]

As wood constructions increasingly use engineered wood products worldwide, concerns arise about the integrity of the wood and adhesives system. The glueline stability is a crucial issue for engineered wood application, especially under cold climate. In this study, Norway spruce (Picea abies) and Scots pine (Pinus sylvestris) joints (150mm x 20mm x 10mm) were bonded with seven commercially available resins (PUR, PVAc, EPI, MF, MUF1, PRF and MUF2) and tested at six temperatures (20, -20, -30, -40, -50 and -60 °C), respectively. Generally, for both species, temperature changes significantly affected shear strength of wood joints. As temperature decreased, the shear strength decreased. PUR resin resulted in the strongest shear strength at all temperatures tested. MF resin responded to temperature changes in a similar ways as the PUR resin. The shear strength of wood joints with EPI resins was sensitive to temperature change. MUF, PRF and PVAc resins demonstrated different characters with Norway spruce and Scot pine. At room temperature, all types of adhesive showed relative stability, in terms of shear strength variation. While at low temperature, the shear strength varied considerably. More specimens need to be tested in further work to more completely present the issue. The EN 301 and EN 302 may need to be specified based on wood species.

Place, publisher, year, edition, pages
World Conference on Timber Engineering (WCTE) , 2014.
Keywords [en]
Cold climate, Engineered wood products, Glueline stability, Shear strength, Adhesives, Building materials, Composite materials, Forestry, Plants (botany), Resins, Temperature, Timber, Wood, Wood products, Cold temperatures, Glue lines, Low temperatures, Relative stabilities, Temperature changes, Wood construction, Wooden construction, Climates, Construction, Joints, Picea Abies
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:ri:diva-45429Scopus ID: 2-s2.0-84925003576OAI: oai:DiVA.org:ri-45429DiVA, id: diva2:1457720
Conference
World Conference on Timber Engineering: Renaissance of Timber Construction, WCTE 2014, 10 August 2014 through 14 August 2014
Note

Conference code: 110957

Available from: 2020-08-12 Created: 2020-08-12 Last updated: 2020-12-01Bibliographically approved

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Citation style
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