Static Bending Performances of Cross-Laminated Wood Panels Made with Tropical and Temperate Woods

Abstract

In this study, for using effectively domestic (temperate) small and medium diameter logs as a wooden floorboard, cross-laminated wood panels were manufactured using domestic larch and tulip woods as a base material for teak and merbau wood flooring, and static bending strength performances were measured to investigate the applicability as the base materials of wooden flooring in place of plywood. Static bending MOE was much influenced by the strength performances of the top layer lamina than that of the laminae for base materials. Bending MOR showed the higher values in tulip wood that was hardwoods than in larch wood that was softwoods regardless of the strength performances of the top layer laminae, and it was found that the values were much influenced by the strength performances of the base materials used in the core and bottom layers. However these values were 1.4-2.5 times higher values than the bending strength of the wooden floorboards specified in KS, it was found that it can be sufficiently applied to the base materials of wooden floorboards in place of plywood.

Comparison of mechanical properties according to the structural materials of lumber, GLT, CLT, and Ply-lam CLT

“…CLT and ply-lam CLT, which showed an equivalent level, were subjected to an independent t-test, and as a result (t = -1.056, p=0.305), no significant difference in MOR according to the materials composition of CLT and Ply-lam CLT could be confirmed. MOR showed differences depending on the composition of the materials, and Byeon et al (2018) reported that MOR is affected by the strength of materials used for the core and bottom layers. Unlike UOE, MOR showed a difference because the strength was different depending on plywood, lumber, and arrangement direction among the composition materials.…”