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논문 기본 정보

자료유형
학술저널
저자정보
Song, Yo-Jin (Division of Forest Material Science & Engineering, Program of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University) Hong, Soon-Il (Division of Forest Material Science & Engineering, Program of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University)
저널정보
한국목재공학회 목재공학(Journal of the Korean Wood Science and Technology) 목재공학 제44권 제4호
발행연도
2016.1
수록면
607 - 615 (9page)

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초록· 키워드

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The delamination along the annual ring on the cross-section of laminae and the bonding strength according to the tangential angle between laminae were evaluated for the production of 3-ply cross-laminated timber (CLT) using domestic larch. Since there is no standard for CLT in Korea, the production and test of specimens for bonding strength followed the standard procedure of "Structural glued laminated timber" (KS F 3021). The standard specifies to exclude any measurement from the cracks of timbers resulted from drying or knots during delamination test of the glued laminated timbers. However, the failure of cross-sectional tissues along the annual rings was observed near the glue-line of all specimens during the delamination test. Because this phenomenon can generate defects in the CLT that may be exposed to various temperatures and relative humidities after the actual construction, the delamination percentage was measured by including this wood failure. As a result, the delamination percentage of the CLT which had been combined in such a way that the annual rings of outer lamina were directed inward was the lowest, which was around 13%, regardless of the annual ring direction of the middle lamina. On the other hand, the delamination percentage of the CLT which had been combined in such a way that the annual rings of outer lamina were directed outward was the highest, which was around 26%. Furthermore, end-split occurred in the outer lamina during the drying process of the boiling delamination test, which affected the delamination percentage. Therefore, the soaking delamination test was found to be more appropriate for evaluating the delamination strength of CLT. The block shear strength of larch CLT was $3.9{\pm}0.9$ MPa on average, which was 46% lower than the block shear strength requirement (7.1 MPa) of the standard, but satisfied the criteria of the block shear strength (3.5 MPa) of the European Standard (prEN 16351: 2013).
#cross-laminated timber #Larix kaempferi #delamination #block shear #rolling shear #wood failure

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참고문헌 (19)

참고문헌 신청
Bergman, R. / 2010 / Drying and control of moisture content and dimensional changes. In Wood Handbook: Wood as an Engineering Material :13~20 google schola Ceccotti, A. / 2008 / New technologies for construction of medium-rise buildings in seismic regions: the XLAM case / Structural Engineering International 18:156~165 google schola Ceccotti, A. / 2006 / Which Seismic Behaviour Factor for Multi-Storey Buildings made of Cross-Laminated Wooden Panels? / Proceedings CIB W18 Meeting 2006 google schola Darby, H. J. / 2013 / A case study to investigate the life cycle carbon emissions and carbon storage capacity of a cross laminated timber, multi-storey residential building, in: SB13 Implementing Sustainability-Barriers and Chances / Presented at the Sustainable Building google schola Fellmoser, P. / 2004 / Influence of rolling shear modulus on strength and stiffness of structural bonded timber elements / CIB-W18 (37-6-5) google schola

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