Characterizing engineering performance of bamboo-wood composite cross-laminated timber made from bamboo mat-curtain panel and hem-fir lumber

Li, Hao; Wang, Brad Jianhe; Wang, Yunlong; Wei, Peixing; Wei, Yang; Wang, Pengzhan

doi:10.1016/j.compstruct.2021.113785

Cited by 43 publications

(13 citation statements)

References 57 publications

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“…From the structural application point of view, the tensile strength and compressive strength of bamboo are actually higher than wood, at about 2 times and 1.1 times that of wood, respectively [12]. The more recent advances in the processing technologies and industrialization level have promoted the production of engineered bamboo with excellent mechanical properties, such as glued bamboo [13], bamboo scrimber [14], laminated bamboo lumber [15] and bamboo-wood composite materials [16].…”

Section: Introductionmentioning

confidence: 99%

Withdrawal resistance of the self-tapping screws in engineered bamboo scrimber

Qiu

Wang

et al. 2021

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

Withdrawal resistance of the self-tapping screws in engineered bamboo scrimber

Qiu

Wang

et al. 2021

Construction and Building Materials

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“…In addition, it was suggested that hybrid CLT can also improve bending strength performance due to the uniform mechanical properties of LVL as well as strength improvement when the outermost layer is used as LVL . When using BMCP as the cross layer in conventional CLT, the bending characteristics showed similar values, but the shear strength increased 1.37 times from 2.4 MPa to 3.3 MPa (Li et al, 2021).…”

Section: Cross-laminated Timber Using Structural Composite Materialsmentioning

confidence: 83%

Research Trends in Hybrid Cross-Laminated Timber (CLT) to Enhance the Rolling Shear Strength of CLT

Yang¹,

LEE²,

강석구³

2021

Journal of the Korean Wood Science and Technology

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In this study, hybrid CLT research and development trends were analyzed to improve the low rolling shear strength of CLT, a large wooden panel used in high-rise wooden buildings. Through this, basic data that can be used in research and development directions for localization of CLT were prepared. As a way to improve the low rolling shear strength, the use of hardwood lamina, the change of the lamina arrangement angle, and the use of structural composite materials are mainly used. Rolling shear strength and shear modulus of hardwood lamina are more than twice as high as softwood lamina. It confirmed that hardwoods can be used and unused species can be used. Rolling shear strength 1.5 times, shear modulus 8.3 times, bending stiffness 4.1 times improved according to the change of the layer arrangement angle, and the CLT strength was confirmed by reducing the layer arrangement angle. Structural wood-based materials have been improved by up to 1.35 times MOR, 1.5 times MOE, and 1.59 times rolling shear strength when used as laminas. Block shear strength between the layer materials was also secured by 7.0 N/mm 2 ,which is the standard for block shear strength. Through the results of previous studies, it was confirmed that the strength performance was improved when a structural wood based materials having a flexural performance of MOE 7.0 GPa and MOR 40.0 MPa or more was used. This was determined based on the strength of layered materials in structural wood-based materials.The optimal method for improving rolling shear strength is judged to be the most advantageous application of structural wood based materials with strength values according to existing specifications. However, additional research is needed on the orientation of CLT lamina arrangement according to the fiber arrangement of structural wood-based materials, and the block shear strength between lamina materials.

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“…The MOEeff of specimen ID 1-A and 1-C layups in the major direction did not in accordance with the standard. The MOEeff of specimen ID 1-B layup in the major direction met the national standard due to the interlace weave pattern of bamboo mat, which enhanced the elastic modulus of the board [28,29]. However, MOEeff in major direction increased with increasing layers of bamboo mat.…”

Section: Moeeff and Moreffmentioning

confidence: 91%

Effect of layups on the mechanical properties of overlaid laminated bamboo lumber made of radial bamboo slices

Guan

Yin²,

Lin

et al. 2022

J Wood Sci

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Radial bamboo strips are being widely used for structural applications due to the higher yield and high strength. However, there was a sharp taper at the top of bamboo which made nodal diaphragm removed incompletely during the process of stripping. The residual bump could bring about poor bonding strength between adjacent radial bamboo strips. In addition, the traditional radial bamboo strips should be weaved before the next step of processing, which caused a lot of material wastes and consumed a lot of labor and time. In order to address these problems, a novel lumber product made of laminated radial bamboo slices was developed by the proper arrangement of core layer and surface layer. The major and minor directions of a panel were defined as the parallel- and perpendicular-to-its arrangement ones in the core layer, respectively. It was found that (1) the layups with double-layer bamboo mats and radial bamboo slices could produce better mechanical properties. The effective modulus of elasticity in major and minor direction was about 7032.5 MPa and 5016.0 MPa, respectively. The effective modulus of rupture in major and minor direction was about 81.0 MPa and 43.6 MPa, respectively; (2) the density distribution tended to be uniform, with a density of about 0.7 g/cm3 that was lower than other similar bamboo-based materials (about 1.0 g/cm3); and (3) the failures occurred in bamboo slices rather than along the bond lines, suggesting good bond quality achieved in this study.

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Characterizing engineering performance of bamboo-wood composite cross-laminated timber made from bamboo mat-curtain panel and hem-fir lumber

Cited by 43 publications

References 57 publications

Withdrawal resistance of the self-tapping screws in engineered bamboo scrimber

Withdrawal resistance of the self-tapping screws in engineered bamboo scrimber

Research Trends in Hybrid Cross-Laminated Timber (CLT) to Enhance the Rolling Shear Strength of CLT

Effect of layups on the mechanical properties of overlaid laminated bamboo lumber made of radial bamboo slices

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