Dynamic Property of Cross-Laminated Woods Made with Temperate Seven Species

Abstract

In this study, cross-laminated wood panels were manufactured with four softwoods and three hardwoods with the goal of efficiently predicting the static strength performance using dynamic modulus of elasticity (MOE) and simultaneously revealing the dynamic performance of cross-laminated wood panels. The effect of the density of the species on the dynamic MOE of the laminated wood panels was investigated. Moreover, the static bending strength performance was predicted nondestructively through the correlation regression between the dynamic MOE and static bending strength performance. For the dynamic MOE, the parallel-and cross-laminated wood panels composed of oriental oak showed the highest value, whereas the laminated wood panels composed of Japanese cedar showed the lowest value. In all types of parallel-and cross-laminated wood panels, the density dependence was confirmed, and the extent of the density dependence was found to be greater in the P ⊥ and C ⊥ types with perpendicular-direction laminae in the faces than in the P ∥ and C ∥ types with longitudinal-direction laminae in the faces. Our findings confirmed that a high correlation exists at a significance level of 1% between the dynamic modulus and static bending modulus or bending strength in all types of laminated wood panels, and that the static bending strength performance can be predicted through the dynamic MOE.

Evaluation of Adhesive Characteristics of Mixed Cross Laminated Timber (CLT) Using Yellow Popular and Softwood Structural Lumbers

“…Representative engineered woods include structural glued laminated timber (GLT) and cross laminated timber (CLT), which have the advantage of being dimensionally stable and easy to process, allowing them to be manufactured in a variety of shapes and sizes. Therefore, not only the physical properties of CLT and design values for utilization as a building material have been studied, but also the manufacturing of hybrid CLT with composite applications of various materials (Choi et al, 2020(Choi et al, , 2021Fujimoto et al, 2021;Gong et al, 2021;Jung et al, 2020;Lee et al, 2022;Song and Kim, 2023;Trisatya et al, 2023). In particular, CLT, a building structure, has high compressive and bending strengths and has accelerated the high-rise development of wooden buildings based on performance studies such as CLT joints developed mainly in Europe and North America (Ahn et al, 2021;Lee et al, 2022).…”

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

“…As a result, vegetative structures are relatively complex for the territorial area, with a diversity of tree species. In the Korean Plant Names Index (KPNI), the processes and the characteristics of the material (Choi et al, 2020Gong et al, 2021;Han et al, 2022;Jang, 2022c;Jung and Yang, 2018;Jung et al, 2019Jung et al, , 2021Jung et al, , 2022Kim, 2018, 2021;Kim et al, 2017Kim et al, , 2020Lee and Bae, 2021;Lee and Kim, 2022;Lee et al, 2021cLee et al, , 2022aLee et al, , 2022bLee et al, , 2022cMin et al, 2019).…”

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

“…Although the plywood industry flourished in the past, there are many difficulties. Thus, research on PSL from veneer is needed, but research on domestic wood resources for making engineered wood products is still limited in Korea (Ahn et al, 2021;Choi et al, 2020;Fujimoto et al, 2021;Gong et al, 2021;Hendrik et al, 2019;Hwang and Oh, 2020;Jang and Lee, 2019;Kang et al, 2019;Park and Jo, 2020;Park et al, 2020a, b;Yanti et al, 2019;Yang et al, 2021). This paper examined the bending and dowel-bearing strength of PSL from Japanese larch veneer strand made in an experimental laboratory and examined the suitability of PSL as a substitute structural material for solid sawn lumber.…”