The evaluation of long-term mechanical properties of wood-based panels by indoor exposure tests

Wood-based panels such as plywood, oriented strand board, particleboard, and medium-density fiberboard are used for roof, wall and floor sheathing materials in residential construction. However, the service life of these panels is still unknown due to the lack of long-term durability data. In this p...

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Bibliographic Details
Published in:Journal of wood science 2018-08, Vol.64 (4), p.377-389
Main Authors: Sekino, Noboru, Korai, Hideaki
Format: Article
Language:English
Subjects:
Bend strength
Biomedical and Life Sciences
Bond strength
Bonding strength
Characterization and Evaluation of Materials
Construction materials
Durability
Exposure
Fiberboard
Life Sciences
Materials Science
Mechanical properties
Modulus of elasticity
Moisture content
Moisture resistance
Original Article
Panels
Particle board
Plywood
Reduction
Residential buildings
Residential density
Service life
Sheathing
Wood Science & Technology
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Summary:Wood-based panels such as plywood, oriented strand board, particleboard, and medium-density fiberboard are used for roof, wall and floor sheathing materials in residential construction. However, the service life of these panels is still unknown due to the lack of long-term durability data. In this paper, test results from six different indoor exposure experiments were integrated to investigate the long-term durability of wood-based panels. The indoor exposure tests lasted for a maximum of 10 years, providing the panels with the changes in moisture content that ranged between 5 and 18%. The reduction in mechanical properties was determined to be in the range of 0–16% for the bending strength, 3–22% for the modulus of elasticity, 11–31% for the internal bond strength and 0–8% for the nail-head pull-through strength. No reduction was recognized for the lateral nail resistance. Furthermore, the concept of deterioration intensity (DI) based on the moisture content history was introduced to predict the long-term durability of the panels, and various calculation methods for DI were discussed so as to increase the correlativity of this property with the reduction in a mechanical property.
ISSN:1435-0211
1611-4663
DOI:10.1007/s10086-018-1720-1