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adhesion ADHESIVES + SEALANTS

, Volume 15, Issue 4, pp 10–15 | Cite as

Load-Bearing Behaviour of Rods Glued in Hardwood

  • Oliver Bletz-MühldorferEmail author
  • Friedemann Diehl
  • Leander Bathon
  • Sebastian Myslicki
  • Ronja Scholz
  • Frank Walther
  • Cordula Grunwald
  • Till Vallée
Cover Story Bonding in Timber Engineering
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Glued-in rods represent a joint type commonly used in timber engineering when high strength, rigid, and aesthetic connections are looked for. While there is extensive research on glued-in rods in softwood, there is still a lack of research on hardwood. Due to climate change and expected reorganisation in the structure of forests, it is to be assumed, that significantly more hardwoods will be used in the construction industry.

Within the recently completed research project TACITUS, funded by the German Federal Ministry for Economic Affairs and Energy (BMWi) through the AiF/iVTH agency, the focus was set on the structural use of hardwood for timber engineering applications, in particular in the context of glued-in rods (GiR). The project was carried out by three research institutions — accompanied by a large industry committee (see infobox).

The objectives of the project consisted in investigating the structural behaviour of steel and G-FRP rods glued into hardwood products under...

Notes

Acknowledgments and outlook

The research project TACITUS (18266 N) was supported by research agency iVTH (Internationaler Verein für Technische Holzfragen e. V.) and funded by the Federal Ministry of Economics and Energy (BMWi) through the AiF within the framework of the programme for the promotion of joint industrial research (IGF) on the basis of a decision of the German Bundestag, which the authors want to acknowledge. Similarly, the authors want to acknowledge the significant material and intellectual contribution of the cooperation partners involved and the members of the industrial committee accompanying the project for their excellent cooperation. The final report with all results can be obtained from the iVTH. In the meantime, inquiries can also be made to the research centres (project coordination: Oliver Bletz-Mühldorfer). A follow-up project, TACITUS FAQs 2018, is currently being initiated, in which the long-term behaviour of engineered hardwood GiR subjected to environmental loading is focused.

References

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    Grunwald, C.; Vallée, T.; Fecht, S.; Bletz-Mühldorfer, O.; Diehl, F.; Bathon, L.; Myslicki, S.; Scholz, R.; Walther, F.: Rods glued in engineered hardwood products part I: Experimental results under quasi-static loading. International Journal of Adhesion and Adhesives, 2018, in press. Doi:  https://doi.org/10.1016/j.ijadhadh.2018.05.003Google Scholar
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    Tlustochowicz, G.; Serrano, E.; Steiger, R.: State-of-the-art review on timber connections with glued-in steel rods. Mechanics of Structures and Materials, 44 (5), 2011, 997–1020CrossRefGoogle Scholar
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    Stepinac, M.; Rajčić, V.; Hunger, F.; van de Kuilen, J.W.G.: Glued-in rods in beech laminated veneer lumber. European Journal of Wood and Wood Products 74 (3), 2016, 463–6. Doi:  https://doi.org/10.1007/s00107-016-1037-y.CrossRefGoogle Scholar
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    Stepinac, M.; Hunger, F.; Tomasi, R.; Serrano, E.; Rajcic, V.; van de Kuilen, J.W.G.: Comparison of design rules for glued-in rods and design rule proposal for implementation in European standards: Working Commission W18 - Timber Structures. CIB-W18/46-7-10. Karlsruhe: Timber Scientific Publishing (2013)Google Scholar

Copyright information

© Springer Fachmedien Wiesbaden GmbH, part of Springer Nature 2018

Authors and Affiliations

  • Oliver Bletz-Mühldorfer
    • 1
    • 2
    Email author
  • Friedemann Diehl
    • 1
  • Leander Bathon
    • 1
  • Sebastian Myslicki
    • 3
  • Ronja Scholz
    • 3
  • Frank Walther
    • 3
  • Cordula Grunwald
    • 4
  • Till Vallée
    • 4
  1. 1.RheinMain University of Applied SciencesWiesbadenDeutschland
  2. 2.Wood Construction Testing Laboratory of the Material Testing Institute for Building Materials (MPA)Deutschland
  3. 3.Department of Materials Test Engineering (WPT)TU Dortmund UniversityDortmundDeutschland
  4. 4.Structural Bonding Working Group, Bonding Technology Production DepartmentFraunhofer Institute for Manufacturing Technology and Advanced Materials IFAMBremenDeutschland

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