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Compressive Strength Properties Perpendicular to the Grain of Cross-Laminated Timber (CLT) Composed of Sugi Laminations

https://research.thinkwood.com/en/permalink/catalogue926
Year of Publication
2014
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Author
Hiroshi, Imichi
Nagao, Hirofumi
Miura, Sachiko
Miyatake, Atsushi
Publisher
J-STAGE
Year of Publication
2014
Country of Publication
Japan
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Topic
Mechanical Properties
Keywords
Cedar
Penetration Test
Clamping Strength
Proportional Limit Stress
Language
Japanese
Research Status
Complete
Series
Journal of Wood Society
Summary
For a cross-laminated timber (CLT) manufactured using Sugi, a digging test was performed by changing the number of layers, the laminar configuration, the direction of the outer layer laminar with respect to the direction of the pressure plate, and the arrangement of the test piece with respect to the load direction, and each combination was performed. In addition to clarifying the sunk strength performance of CLT, a method for easily evaluating the sunk strength performance was examined. As a result of the sinking test, it was found that the parameters that determine the sinking strength performance are the direction of the outer layer laminar and the arrangement of the test piece, and the number of layers and the laminar configuration do not contribute much to the sinking strength performance. When the proportional limit stress of CLT was estimated using the proportional limit stress of each laminar, the estimated value and the measured value were in relatively good agreement.
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Effects of the Width and Lay-Up of Sugi Cross-Laminated Timber (CLT) on its Dynamic and Static Elastic Moduli, and Tensile Strength

https://research.thinkwood.com/en/permalink/catalogue521
Year of Publication
2016
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Author
Ido, Hirofumi
Nagao, Hirofumi
Harada, Masaki
Kato, Hideo
Ogiso, Junko
Miyatake, Atsushi
Publisher
Springer Japan
Year of Publication
2016
Country of Publication
Japan
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Topic
Mechanical Properties
Keywords
Modulus of Elasticity
Tensile Strength
Language
English
Research Status
Complete
Series
Journal of Wood Science
Summary
Cross-laminated timber (CLT) has recently emerged as a new wood product that utilizes a large quantity of domestic lumber. This study aims to analyze the effects of width and lay-ups on the tensile strength of CLT. To this end, the elastic modulus of sugi CLT with different lay-ups was measured by dynamic and static methods. Moreover, tensile tests were conducted for different widths and lay-ups of CLT. Results indicate that the apparent bending Young’s modulus, as calculated using the dynamic method, is directly proportional to the measured Young’s modulus in static method for each lay-up. Furthermore, there was no significant effect of width on the tensile strength in the range of 150, 300, and 600 mm. However, the variations in lay-ups affected the tensile strength as follows: CLT with larger ratio of the major strength direction lamina along the cross-section and with higher grade of lamina in the major strength direction showed higher tensile strength. The estimated tensile strength of CLT, as calculated using the Young’s modulus of the lamina of each layer, and the tensile strength of lamina as simple substance was found to be in good agreement with the measured tensile strength of CLT.
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Free
Resource Link
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