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Effect of high-temperature drying on properties of Norway spruce and larch

Frühwald, Eva LU (2007) In European Journal of Wood and Wood Products 65(6). p.411-418
Abstract (Swedish)
Abstract in German

Bei der Holztrocknung können Änderungen der Holzeigenschaften aufgrund von Behandlungstemperatur und -dauer auftreten. Erhöhte Trocknungstemperaturen führen im Allgemeinen zu einer Verkürzung der Trockendauer und einer negativen Beeinflussung einiger Eigenschaften. Die vorliegende Studie behandelt die Auswirkung unterschiedlicher Trocknungstemperaturen (80, 120 und 170 °C) auf Gleichgewichtsfeuchte, Sorptionsrate, Biegefestigkeit und -steifigkeit in Fichte und Lärche unterschiedlicher Herkunft und vergleicht diese Ergebnisse mit denen von wärmebehandeltem Holz (Thermowood

®). Die Versuche bestätigen die Ergebnisse früherer Untersuchungen in der Hinsicht, das's sowohl Trocknungstemperatur al's... (More)
Abstract in German

Bei der Holztrocknung können Änderungen der Holzeigenschaften aufgrund von Behandlungstemperatur und -dauer auftreten. Erhöhte Trocknungstemperaturen führen im Allgemeinen zu einer Verkürzung der Trockendauer und einer negativen Beeinflussung einiger Eigenschaften. Die vorliegende Studie behandelt die Auswirkung unterschiedlicher Trocknungstemperaturen (80, 120 und 170 °C) auf Gleichgewichtsfeuchte, Sorptionsrate, Biegefestigkeit und -steifigkeit in Fichte und Lärche unterschiedlicher Herkunft und vergleicht diese Ergebnisse mit denen von wärmebehandeltem Holz (Thermowood

®). Die Versuche bestätigen die Ergebnisse früherer Untersuchungen in der Hinsicht, das's sowohl Trocknungstemperatur al's auch Trocknungsdauer die Holzeigenschaften beeinflussen. Hochtemperaturtrocknung oder Wärmebehandlung kann für unterschiedliche Anwendungszwecke optimiert werden, um Holz mit hoher Festigkeit und weniger guter Dauerhaftigkeit oder umgekehrt zu produzieren. (Less)
Abstract
In timber drying, mechanical properties may be changed due to treatment temperature and treatment duration. In general, when increasing the kiln temperature, drying time is decreased and some timber properties are negatively affected. In this study, the effect of different drying temperatures (80, 120 and 170 degrees C) on equilibrium moisture content and sorption rate, on bending strength and stiffness was investigated for Norway spruce and larch from four proveniences and the results were compared to those obtained for heat-treated wood (Thermowood(R)). The experiments confirm earlier research that both treatment temperature and treatment duration affect the properties. High-temperature drying or treatment can be optimized for several... (More)
In timber drying, mechanical properties may be changed due to treatment temperature and treatment duration. In general, when increasing the kiln temperature, drying time is decreased and some timber properties are negatively affected. In this study, the effect of different drying temperatures (80, 120 and 170 degrees C) on equilibrium moisture content and sorption rate, on bending strength and stiffness was investigated for Norway spruce and larch from four proveniences and the results were compared to those obtained for heat-treated wood (Thermowood(R)). The experiments confirm earlier research that both treatment temperature and treatment duration affect the properties. High-temperature drying or treatment can be optimized for several applications, yielding strong but not so durable timber or vice versa. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
KSTRWood
in
European Journal of Wood and Wood Products
volume
65
issue
6
pages
411 - 418
publisher
Springer
external identifiers
  • wos:000250631100001
  • scopus:35748964988
ISSN
0018-3768
DOI
10.1007/s00107-007-0174-8
language
English
LU publication?
yes
id
a2fdf526-8575-412f-a922-589a47d46198 (old id 653141)
date added to LUP
2007-12-07 11:21:53
date last changed
2017-06-25 03:47:21
@article{a2fdf526-8575-412f-a922-589a47d46198,
  abstract     = {In timber drying, mechanical properties may be changed due to treatment temperature and treatment duration. In general, when increasing the kiln temperature, drying time is decreased and some timber properties are negatively affected. In this study, the effect of different drying temperatures (80, 120 and 170 degrees C) on equilibrium moisture content and sorption rate, on bending strength and stiffness was investigated for Norway spruce and larch from four proveniences and the results were compared to those obtained for heat-treated wood (Thermowood(R)). The experiments confirm earlier research that both treatment temperature and treatment duration affect the properties. High-temperature drying or treatment can be optimized for several applications, yielding strong but not so durable timber or vice versa.},
  author       = {Frühwald, Eva},
  issn         = {0018-3768},
  keyword      = {KSTRWood},
  language     = {eng},
  number       = {6},
  pages        = {411--418},
  publisher    = {Springer},
  series       = {European Journal of Wood and Wood Products},
  title        = {Effect of high-temperature drying on properties of Norway spruce and larch},
  url          = {http://dx.doi.org/10.1007/s00107-007-0174-8},
  volume       = {65},
  year         = {2007},
}