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Development of Structural Glued Laminated Timber with Domestic Cedar  

Kim, Kwang-Mo (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Research Institute)
Shim, Sang-Ro (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Research Institute)
Shim, Kug-Bo (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Research Institute)
Park, Joo-Saeng (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Research Institute)
Kim, Wun-Sub (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Research Institute)
Kim, Byoung-Nam (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Research Institute)
Yeo, Hwanmyeong (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.37, no.3, 2009 , pp. 184-191 More about this Journal
Abstract
In the southern part of the Korean Peninsula including Jeju-island, the production amount of domestic cedar has increased gradually. However, their low qualities, expected to be caused by the low density and frequent knots, have restricted their practical utilization as the high value-added products. In this study, it is aimed to look for the new uses of domestic cedar and to examine the applicability for lamination lumbers of structural glued laminated timber (glulam). Above all, machine stress ratings for individual sawn lumbers confirmed that modulus of elasticity (MOE) of cedar lumber was lower than that of other common softwood species in Korea. On the other hand, cedar lumbers have enough stiffness to manufacture the structural glulam in accordance with Korean Industrial Standard (KS). The bonding strength and durability also met the KS limitation. Nevertheless, from the result of bending tests for cedar glulam, it was shown that the modulus of elasticity (MOE) did not meet the KS limitation. Therefore, it was concluded that additional researches were needed for reinforcing the stiffness of cedar glulam.
Keywords
Japanese cedar; glulam; MOR; MOE; adhesive properties;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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