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The creep of wood destabilized by change in moisture content. Part 1: The creep behaviors of wood during and immediately after drying

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Published/Copyright: June 1, 2005
Holzforschung
From the journal Volume 58 Issue 3

Abstract

To better understand mechano-sorptive creep, creep behaviors were compared in wood samples during the drying process, immediately after drying, and after a long conditioning under constant humidity and temperature. Creep was greater in the sample tested immediately after drying than in the sample conditioned for a long time under relative humidity equal to that after drying, despite the fact that these samples had almost the same moisture content (MC). While the wood that has been moisture-conditioned for a long time is in a stable state, the wood tested immediately after the drying is presumed to be in an unstable state. Moreover, creep of the sample tested during the drying process was greater than that of the sample tested immediately after the drying. It has also been found that the instability decreased with time, indicating that stabilization and destabilization occur simultaneously during the drying process. In recent studies, a decrease in the elastic modulus and an increase in the fluidity of wood immediately after a change in MC or temperature have been reported. These findings are attributed to the instability caused by changes in MC or temperature. Based on the results of the present study and recent studies, we consider the increase in the fluidity of wood as the MC changes to be attributable to instability.

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Published Online: 2005-06-01
Published in Print: 2004-05-12

Copyright © 2004 by Walter de Gruyter GmbH & Co. KG

Articles in the same Issue

  1. The Bremen Cog of 1380 – An electron microscopic study of its degraded wood before and after stabilization with PEG
  2. Ultrastructure of iodine treated wood
  3. Effects of refining on the fibre structure of kraft pulps as revealed by FE-SEM and TEM: Influence of alkaline degradation
  4. Changes in the fiber wall during refining of bleached pine kraft pulp
  5. An unusual formation of tension wood in a natural forest Acacia sp.
  6. Changes in the surface properties of wood due to sanding
  7. Use of near infrared spectroscopy to predict the mechanical properties of six softwoods
  8. The creep of wood destabilized by change in moisture content. Part 1: The creep behaviors of wood during and immediately after drying
  9. Modeling the process of desorption of water in oak (Quercus robur L.) wood
  10. Moisture adsorption thermodynamics of wood from fractal-geometry approach
  11. Application of ionic liquids for electrostatic control in wood
  12. Ionic liquids in wood preservation
  13. New bis-quaternary ammonium and bis-imidazolium chloride wood preservatives
  14. Environmentally-benign wood preservatives based on an organic biocide:antioxidant combination: Ground-contact efficacy ratings and BHT depletion after four years of exposure
  15. Production of 2,5-dimethoxyhydroquinone by the brown-rot fungus Serpula lacrymans to drive extracellular Fenton reaction
  16. Fungal decay resistance of wood reacted with phosphorus pentoxide-amine system
  17. The use of organo alkoxysilane coupling agents for wood preservation
  18. Phenolic extractives from wood of birch (Betula pendula)
  19. Stability of arylglycerols during alkaline cooking
https://doi.org/10.1515/HF.2004.040

Articles in the same Issue

  1. The Bremen Cog of 1380 – An electron microscopic study of its degraded wood before and after stabilization with PEG
  2. Ultrastructure of iodine treated wood
  3. Effects of refining on the fibre structure of kraft pulps as revealed by FE-SEM and TEM: Influence of alkaline degradation
  4. Changes in the fiber wall during refining of bleached pine kraft pulp
  5. An unusual formation of tension wood in a natural forest Acacia sp.
  6. Changes in the surface properties of wood due to sanding
  7. Use of near infrared spectroscopy to predict the mechanical properties of six softwoods
  8. The creep of wood destabilized by change in moisture content. Part 1: The creep behaviors of wood during and immediately after drying
  9. Modeling the process of desorption of water in oak (Quercus robur L.) wood
  10. Moisture adsorption thermodynamics of wood from fractal-geometry approach
  11. Application of ionic liquids for electrostatic control in wood
  12. Ionic liquids in wood preservation
  13. New bis-quaternary ammonium and bis-imidazolium chloride wood preservatives
  14. Environmentally-benign wood preservatives based on an organic biocide:antioxidant combination: Ground-contact efficacy ratings and BHT depletion after four years of exposure
  15. Production of 2,5-dimethoxyhydroquinone by the brown-rot fungus Serpula lacrymans to drive extracellular Fenton reaction
  16. Fungal decay resistance of wood reacted with phosphorus pentoxide-amine system
  17. The use of organo alkoxysilane coupling agents for wood preservation
  18. Phenolic extractives from wood of birch (Betula pendula)
  19. Stability of arylglycerols during alkaline cooking
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