Experimental Study of Bending and Bearing Strength of Parallel Strand Lumber (PSL) from Japanese Larch Veneer Strand

Abstract

This study examined the structural performance of experimental parallel strand lumber (PSL) from a Larch veneer strand. The prototype of PSL from a Larch veneer strand was manufactured in the experimental laboratory and tested. The bending and dowel bearing strength were determined from the modulus of elasticity (MOE), modulus of rupture (MOR), and dowel bearing strength based on a 5% offset yield load. The test results indicated that the average MOR of PSL was higher than that of 2 × 4 dimension lumber, and the average MOE of PSL was lower than that of 2 × 4 dimension lumber. A linear relationship was observed between the MOR and MOE. The allowable bending stress of PSL was derived as specified in ASTM D2915 and compared with other research. The dowel bearing strength of PSL in parallel to the grain was approximately double that perpendicular to the grain of PSL. A comparison of several theoretical calculations based on each national code for the dowel bearing strength was conducted, and some theoretical equations produced results closer to the experimental results when it was parallel to the grain, but the difference was higher in the case perpendicular to the grain. The test results showed that PSL made with Japanese larch veneer strands appeared to be suitable for a raw material of structural composite lumber (SCL) appeared to be used as a raw material for SCL.

Radial Variation of Wood Anatomical Characteristics and Maturation Ages of Six Korean Oak Species

“…Chang et al [45] showed that Qv had a lower shrinkage rate than Qm. Furthermore, Oh [46,47] reported that Qv exhibited higher compression and bending strength than Qs, Qm, Qal, and Qac.…”

Evaluation of the Basic Properties for the Korean Major Domestic Wood Species

“…Bending strength KS F 2208 Cha et al, 2022;Darwis et al, 2023;Fujimoto et al, 2021;Hadi et al, 2019Hadi et al, , 2022Iswanto et al, 2017;Kang et al, 2023;Kim et al, 2020;Lee and Jang, 2023;Lee and Oh, 2023;Liu et al, 2022;Maulana et al, 2017;Oh, 2021Oh, , 2022Özcan and Korkmaz, 2019;Park et al, 2015bPark et al, , 2016Qi et al, 2019;Savero et al, 2020;Schulz et al, 2021;Song and Kim, 2023;Sumardi et al, 2022;Trisatya et Huh et al, 2022;Iswanto et al, 2021;Jain et al, 2022;Jung et al, 2019Jung et al, , 2021Jung et al, , 2022Manurung et al, 2019;Maulana et al, 2021;Maulina et al, 2020;Min et al, 2019;Purnawati et al, 2018;Seo et al, 2020 Extractives ASTM E 1690…”

Macroscopic and Microscopic Anatomical Characteristics of Six Korean Oak Species

“…Several studies have reported on the anatomical characteristics of Oriental oak species. Oh [9] compared the relationship between the anatomical characteristics and bending strength of Quercus spp. wood from Korea.…”