Summary
Storage and use of fibre hardboard and particle board in warm and moist tropical climate increases at first the moisture content. This increase in moisture content seems to be connected with certain irreversible changes in structure and bonding, as there is an elevated equilibrium moisture content after reconditioning in normal climate. Simultaneously modulus of elasticity and tensile strength decrease by approximately 24 to 45%, as has been shown by tests. Also the tensile strength perpendicular to the surface at particle boards, is reduced by 50% which reduction is, however, almost completely balanced after reconditioning.
Further investigations should now be carried out to study the changing rheological behaviour of fibre hardboard in warm and moist tropical climate so as to find new ways for the production of boards which are suitable for use in tropics.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Schrifttum
Erweiterter Text des Vortrags auf der 6. Holztagung der Deutschen Gesellschaft für Holzforschung in Essen am 30. 10. 1958. Für die Durchführung der Versuche habe ich Herrn Sanzi zu danken. Die Arbeit erfolgte im Rahmen eines vom Bundesministerium für Wirtschaft großzügig geförderten Forschungsvorhabens.
Lundgren, S. Å.: Holzfaser-Hartplatten als Konstruktionsmaterial —ein viskos-elastischer Körper. Holz als Roh- u. Werkstoff Bd.15 (1957) S. 19.
Author information
Authors and Affiliations
Additional information
Mitteilung aus dem Institut für Holzforschung und Holztechnik der Universität München
Rights and permissions
About this article
Cite this article
Kollmann, F. Über die mechanische Bewährung von Holzfaser-Hartplatten und Holzspanplatten bei der Verwendung in den Tropen. Holz als Roh-und Werkstoff 17, 239–245 (1959). https://doi.org/10.1007/BF02613088
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02613088