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Proposal of Reinforcing Method Using Wooden Sheets for Reduction of Strength Variation Coefficient of Glued Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue1145
Year of Publication
2012
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Author
Mori, Takuro
Adachi, Koji
Umemura, Kenji
Yamauchi, Hidefumi
Yano, Hiroyuki
Publisher
J-STAGE
Year of Publication
2012
Country of Publication
Japan
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Topic
Mechanical Properties
Keywords
Bending Strength
Reinforcement
Bending Test
Strength Distribution
Defects
Language
Japanese
Research Status
Complete
Series
Journal of the Society of Materials Science, Japan
ISSN
1880-7488
Summary
Glued laminated timber (glulam) composed of mechanical-graded lamina shows higher strength reliability than lumber. However the glulam still has wider strength distribution than steel or concrete for structural applications because of the large difference between the mean and the lower limit value. This study aimed at reduction of the coefficient of variation of the glulam in bending strength by partial reinforcement technique using wooden sheets. The wooden sheets made from bamboo or white oak were covered to several defects on the surface of glulam such as large knots and finger joints. The strength performance and the reinforcement effect for the bending test of the glulam with reinforcement materials were evaluated. As a result, it was clarified that a bamboo sheet (two layers) or a white oak sliced veneer sheet could reinforce the defects, and the average of bending strength was improved due to the improvement in the lower value in the strength distribution.
Online Access
Free
Resource Link
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