Analysis of Mechanical Properties of Cross-laminated Timber (CLT) with Plywood using Korean Larch

Choi, Chan-Yong; Erina, Kojima; Kim, Kyung-Jung; Yamasaki, Mariko; Sasaki, Y.; 강석구,

doi:10.15376/biores.13.2.2715-2726

Cited by 27 publications

(18 citation statements)

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“…There have been attempts to improve the CLT's performance and cost competitiveness by changing the cross layer to plywood or LVL. Choi et al [22,23] developed a Ply-lam panel which was composed of solid wood and plywood lamina. The price of plywood is lower than solid wood in the Asian market; thus, Ply-lam has advantages in terms of production cost.…”

Section: Introductionmentioning

confidence: 99%

Prediction of withdrawal resistance for a screw in hybrid cross-laminated timber

et al. 2020

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The aim of this study was to predict the withdrawal resistance of a screw in hybrid cross-laminated timber (CLT) composed of two types of lamina layers. A theoretical model to predict the withdrawal resistance was developed from the shear mechanism between a screw and the layers in hybrid CLT. The parameters for the developed model were the withdrawal stiffness and strength that occurs when a screw is withdrawn, and the penetration depth of a screw in layers of a wood material. The prediction model was validated with an experimental test. Screws with two different diameters and lengths (Ø6.5 × 65 mm and Ø8.0 × 100 mm) were inserted in a panel composed of solid wood and plywood layers, and the withdrawal resistances of the screws were evaluated. At least 30 specimens for each group were tested to derive the lower 5th percentile values. As a result, the developed model predictions were 86–88% of the lower 5th percentile values of hybrid CLT from the properties of the lamina layer. This shows that the withdrawal resistance of hybrid CLT can be designed from the properties of its layer.

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Section: Introductionmentioning

confidence: 99%

Prediction of withdrawal resistance for a screw in hybrid cross-laminated timber

et al. 2020

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“…2 Department of Bio-Based Materials, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea. 3 Research Institute of Agriculture and Life Sciences/Department of Agriculture, Forestry and Bioresources, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul, South Korea.…”

Section: Discussionmentioning

confidence: 99%

“…The mass timber panels can be used for floor or wall elements in the mid-rise and high-rise buildings. Hybrid CLTs using alternative materials (plywood, oriented strand board, laminated strand lumber, or hardwood) as layers of the CLT have also been reported to improve the performance and cost competitiveness [2][3][4][5][6]. As an example, a panel composed of solid wood and plywood lamina is called a Ply-lam (Fig.…”

Section: Introductionmentioning

confidence: 99%

Lateral resistance of mass timber shear wall connected by withdrawal-type connectors

et al. 2021

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In this study, the lateral resistances of mass timber shear walls were investigated for seismic design. The lateral resistances were predicted by kinematic models with mechanical properties of connectors, and compared with experimental data. Four out of 7 shear wall specimens consisted of a single Ply-lam panel and withdrawal-type connectors. Three out of 7 shear wall specimens consisted of two panels made by dividing a single panel in half. The divided panels were connected by 2 or 4 connectors like a single panel before being divided. The applied vertical load was 0, 24, or 120 kN, and the number of connectors for connecting the Ply-lam wall-to-floor was 2 or 4. As a result, the tested data were 6.3 to 52.7% higher than the predicted value by kinematic models, and it means that the lateral resistance can be designed by the behavior of the connector, and the prediction will be safe. The effects of wall-to-wall connectors, wall-to-floor connectors and vertical loads on the shear wall were analyzed with the experimental data.

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“…Some studies have been conducted on the HCLT fabricated with sawn timber and SCL/ wood-based panels. The SCL/ wood-based panels employed in these studies included LVL, LSL, oriented strand lumber (OSL), COSB and plywood [27][28][29][30][31][32][33][34][35]. Wang et al [29] fabricated the HCLT by mixing SPF and LSL, and when LSL was used as the outer layer (longitudinal layer), the modulus of elastic (MOE) and modulus of rupture (MOR) of HCLT increased by 19% and 36%, respectively, compared with the generic lumber CLT.…”

Section: Research Progress Of Hybrid Cltmentioning

confidence: 99%

Cross-Laminated Timber: A Review on Its Characteristics and an Introduction to Chinese Practices

Wang¹,

Yin²

2022

Engineered Wood Products for Construction

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Cross-laminated timber (CLT) is a popular engineering wood product in recent years. It has some characteristics of configuration and mechanical properties, which makes it an excellent building material for floor, roof and other places. In Europe and North America, lots of middle and high-rise buildings have adopted CLT as their main structural component. CLT has recently been used to construct public buildings in China. As a building material, the lower rolling shear properties of CLT has always been a concern. To overcome this shortcoming of CLT, the structural composite lumber and bamboo have been employed to develop hybrid CLT. This chapter also presents the latest development and advances of CLT in China.

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Analysis of Mechanical Properties of Cross-laminated Timber (CLT) with Plywood using Korean Larch

Cited by 27 publications

References 0 publications

Prediction of withdrawal resistance for a screw in hybrid cross-laminated timber

Prediction of withdrawal resistance for a screw in hybrid cross-laminated timber

Lateral resistance of mass timber shear wall connected by withdrawal-type connectors

Cross-Laminated Timber: A Review on Its Characteristics and an Introduction to Chinese Practices

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