Tree bark insulation panels for special purpose insulation: evaluation and discrete modeling of structure property relationships

Günther Kain, Bernhard Lienbacher, Marius-Catalin Barbu, Bernhard Plank, Klaus Richter, Alexander Petutschnigg

Research output: Chapter in Book/Report/Conference proceedingsConference contribution

1 Citation (Scopus)


Bark is a highly efficient natural tree protective layer with outstanding properties. It is a classic by-product of the wood industries and most of the time directly burned where it accrues. The present study focuses on using bark as a material in form of thermal insulation panels. Therefore, insulation boards out of softwood (Larix decidua) bark were produced using different resins as a binder. Also, the orientation of bark particles within the boards was controlled in the experiment. The boards were analyzed for their physical-mechanical properties. Additionally the boards were scanned with an industrial computed tomograph (CT) in order to study the structure of the boards. That knowledge of the board's microstructure enabled the application of a numerical model for thermal conductivity based on the finite difference method (FDM). A theoretical discussion of the heat flow processes within the boards was used to propose optimization potentials in order to lower their thermal conductivity. An integrative discussion of physical-mechanical and structural bark insulation board properties was conducted to define potentials for industrial application.

Original languageEnglish
Title of host publicationWCTE 2016 - World Conference on Timber Engineering
Number of pages8
ISBN (Electronic)9783903039001
Publication statusPublished - 2016
EventWorld Conference on Timber Engineering - Vienna, Austria, Austria
Duration: 22 Aug 201625 Aug 2016

Publication series

NameWCTE 2016 - World Conference on Timber Engineering


ConferenceWorld Conference on Timber Engineering
CityVienna, Austria
Internet address


  • computed tomography
  • Tree bark
  • bark insulation panels
  • CT-structure evaluation
  • thermal conductivity
  • numerical modeling
  • Numerical modeling
  • Bark insulation panels
  • Softwood tree bark
  • Thermal conductivity


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