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Joint study on material properties of adhesives to be used in load-bearing timber-glass composite elements
Technische Universität Dresden, Germany.
Linnaeus University, Faculty of Technology, Department of Building Technology.ORCID iD: 0000-0002-1181-8479
Technische Universität Dresden, Germany.
Linnaeus University, Faculty of Technology, Department of Building Technology.ORCID iD: 0000-0002-5333-0682
2014 (English)In: Glass | Facade | Energy / [ed] Jens Schneider, Bernhard Weller, Technische Uni Dresden , 2014, 271-280 p.Conference paper, Published paper (Refereed)
Abstract [en]

Beyond its transparency, glass offers a large potential to fulfill load-bearing functions. Timber-glass composite elements take advantage of the high stiffness and strength of glass. At the same time the post-breakage behavior of the composite element increases significantly compared to the brittle failure of a pure glass. The current study relates to timber-glass composites where the composite action is obtained via a linear bondline connecting the glass pane to a timber frame. The full potential of these composite elements arises from the use of adhesives of medium and high stiffness which exhibit rather small deformations compared to e.g. structural silicones. A central objective of the research is the assessment and the optimization of the bondline properties with respect to stiffness of the adhesive. The paper summarizes the results of an in-depth study on commercially available adhesives and evaluates their general suitability in timber-glass composites.

The material properties of the adhesives were determined by thorough mechanical testing of the bulk material in the first place under varying conditions, typically encountered in façades. The potential use in glass-timber composites was then evaluated using small bonded specimens comprising birch plywood or massive pine wood in combination with soda-lime glass. Failure modes were categorized in order to ascertain the influence of the timber strength on the load-bearing capacity.

In order to guarantee reliable results from various sources, parts of the tests were executed repeatedly at different laboratories. Results were compared and validated throughout the project. Hence the results of this study provide a reliable basis for material models used in e.g. numerical analysis and engineered design solutions. The study presented here is part of the WoodWisdomNet project “LBTGC - Load Bearing Timber Glass Composites”

Place, publisher, year, edition, pages
Technische Uni Dresden , 2014. 271-280 p.
Keyword [en]
adhesive bonding, timber-glass composites, material properties
National Category
Building Technologies Textile, Rubber and Polymeric Materials
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-38162ISBN: 978-3-86780-402-8 (print)OAI: oai:DiVA.org:lnu-38162DiVA: diva2:763114
Conference
Engineered transparency, Düsseldorf, Germany, 2014-10-21
Funder
VINNOVA, 2011-02266
Available from: 2014-11-13 Created: 2014-11-13 Last updated: 2015-09-28Bibliographically approved

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