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The combined effect of wetting ability and durability on outdoor performance of wood : development and verification of a new prediction approach

Meyer-Veltrup, Linda; Brischke, Christian; Alfredsen, Gry; Humar, Miha; Flæte, Per Otto; Isaksson, Tord LU ; Brelid, Pia Larsson; Westin, Mats and Jermer, Jöran (2017) In Wood Science and Technology
Abstract

Comprehensive approaches to predict performance of wood products are requested by international standards, and the first attempts have been made in the frame of European research projects. However, there is still an imminent need for a methodology to implement the durability and moisture performance of wood in an engineering design method and performance classification system. The aim of this study was therefore to establish an approach to predict service life of wood above ground taking into account the combined effect of wetting ability and durability data. A comprehensive data set was obtained from laboratory durability tests and still ongoing field trials in Norway, Germany and Sweden. In addition, four different wetting ability... (More)

Comprehensive approaches to predict performance of wood products are requested by international standards, and the first attempts have been made in the frame of European research projects. However, there is still an imminent need for a methodology to implement the durability and moisture performance of wood in an engineering design method and performance classification system. The aim of this study was therefore to establish an approach to predict service life of wood above ground taking into account the combined effect of wetting ability and durability data. A comprehensive data set was obtained from laboratory durability tests and still ongoing field trials in Norway, Germany and Sweden. In addition, four different wetting ability tests were performed with the same material. Based on a dose–response concept, decay rates for specimens exposed above ground were predicted implementing various indicating factors. A model was developed and optimised taking into account the resistance of wood against soft, white and brown rot as well as relevant types of water uptake and release. Decay rates from above-ground field tests at different test sites in Norway were predicted with the model. In a second step, the model was validated using data from laboratory and field tests performed in Germany and Sweden. The model was found to be fairly reliable, and it has the advantage to get implemented into existing engineering design guidelines. The approach at hand might furthermore be used for implementing wetting ability data into performance classification as requested by European standardisation bodies.

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organization
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Contribution to journal
publication status
epub
subject
in
Wood Science and Technology
pages
23 pages
publisher
Springer
external identifiers
  • scopus:85012284041
  • wos:000399220500012
ISSN
0043-7719
DOI
10.1007/s00226-017-0893-x
language
English
LU publication?
yes
id
10281d36-6575-4cb2-98da-929bd9c525fa
date added to LUP
2017-02-22 13:20:02
date last changed
2018-01-07 11:51:51
@article{10281d36-6575-4cb2-98da-929bd9c525fa,
  abstract     = {<p>Comprehensive approaches to predict performance of wood products are requested by international standards, and the first attempts have been made in the frame of European research projects. However, there is still an imminent need for a methodology to implement the durability and moisture performance of wood in an engineering design method and performance classification system. The aim of this study was therefore to establish an approach to predict service life of wood above ground taking into account the combined effect of wetting ability and durability data. A comprehensive data set was obtained from laboratory durability tests and still ongoing field trials in Norway, Germany and Sweden. In addition, four different wetting ability tests were performed with the same material. Based on a dose–response concept, decay rates for specimens exposed above ground were predicted implementing various indicating factors. A model was developed and optimised taking into account the resistance of wood against soft, white and brown rot as well as relevant types of water uptake and release. Decay rates from above-ground field tests at different test sites in Norway were predicted with the model. In a second step, the model was validated using data from laboratory and field tests performed in Germany and Sweden. The model was found to be fairly reliable, and it has the advantage to get implemented into existing engineering design guidelines. The approach at hand might furthermore be used for implementing wetting ability data into performance classification as requested by European standardisation bodies.</p>},
  author       = {Meyer-Veltrup, Linda and Brischke, Christian and Alfredsen, Gry and Humar, Miha and Flæte, Per Otto and Isaksson, Tord and Brelid, Pia Larsson and Westin, Mats and Jermer, Jöran},
  issn         = {0043-7719},
  language     = {eng},
  month        = {02},
  pages        = {23},
  publisher    = {Springer},
  series       = {Wood Science and Technology},
  title        = {The combined effect of wetting ability and durability on outdoor performance of wood : development and verification of a new prediction approach},
  url          = {http://dx.doi.org/10.1007/s00226-017-0893-x},
  year         = {2017},
}