Evaluation of bond strength of cross-laminated LSL specimens under short-span bending
-
Meng Gong
,
Ling Li
Abstract
Mass timber panels (MTPs) have a great potential in the construction of mid- and high-rise buildings. Evaluation of the face-bond strength of MTPs is of great practical interest for this kind of products. This study aimed at developing an appropriate test procedure for evaluating the adhesive bond strength of cross-laminated laminated strand lumber (CL-LSL). Three-point short-span bending tests were conducted on two-layer asymmetric CL-LSL specimens (2LasymCL-LSL), which were adhesively bonded by two-component resins of the type polyurethane (PUR) or polyvinyl acetate (PVAc). For comparison, block shear specimens were tested as well. It was found that the 2LasymCL-LSL assembly was better suitable under the short-span bending for differentiating between good and poor bond quality of MTPs.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This study was financially supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) under its Discovery Grant Program (RGPIN-2017-03821) and New Brunswick Innovation Research Chair Program. The in-kind contributions were made by Ainsworth Engineered Canada LP and Purbond AG in terms of materials and technical advice.
Employment or leadership: None declared.
Honorarium: None declared.
Conflict of interest: All authors confirmed that there is no conflict of interests regarding the research study addressed in this manuscript.
References
American Society for Testing and Materials. (2009) Standard test methods of static tests of lumber in structural sizes. Designation: D198-09. American Society for Testing and Materials (ASTM), West Conshohocken, PA, USA.Search in Google Scholar
American Society for Testing and Materials. (2015) Standard test methods for evaluating properties of wood-base fiber and particle panel materials. Designation: D1037-12. American Society for Testing and Materials (ASTM), West Conshohocken, PA, USA.Search in Google Scholar
APA – The Engineered Wood Association. (2012) Standard for performance-rated cross-laminated timber. ANSI/APA PRG 320-2012. APA – The Engineered Wood Association, Tacoma, WA, USA.Search in Google Scholar
Chui, Y.H., Gong, M., Niederwestberg, J. (2015) Development of a lumber-SCL massive timber panel product. Final Report #: WSTC2013-015, Wood Science and Technology Centre, the University of New Brunswick, Fredericton, New Brunswick, Canada.Search in Google Scholar
Davids, W.G., Willey, N., Anido, R.L., Shaler, S., Gardner, D., Edgar, R., Tajvidi, M. (2017) Structural performance of hybrid SPFs-LSL cross-laminated timber panels. Constr. Build. Mater. 149:156–163.10.1016/j.conbuildmat.2017.05.131Search in Google Scholar
Gagnon, S., Pirvu, C. editors. (2011) CLT Handbook, Canadian Edition. FPInnovations Special Publication SP-528E, Pointe-Claire, Quebec, Canada.Search in Google Scholar
Gere, J.M., Goodno, B.J. (2012) Mechanics of materials, 8th Edition, Cengage Learning, Stamford, CT, USA.Search in Google Scholar
Niederwestberg, J., Zhou, J.H., Chui, Y.H. (2018) Mechanical properties of innovative, multi-layer composite laminated panels. Buildings 8:1–13.10.3390/buildings8100142Search in Google Scholar
Serrano, E., Enquist, B. (2005) Contact-free measurement and non-linear finite element analyses of strain distribution along wood adhesive bonds. Holzforschung 59:641–646.10.1515/HF.2005.103Search in Google Scholar
Yu, Y.B., Liu, Y., Gong, M., Xu, Z.J., Fang, Y.P. (2017) R&R study of using a stress wave timer to measure the elastic modulus of structural dimension lumber. Measurement 95:293–296.10.1016/j.measurement.2016.10.040Search in Google Scholar
Zhou, Q.Y., Gong, M., Chui, Y.H., Mohammad, M. (2014) Measurement of rolling shear modulus and strength of cross-laminated timber fabricated with black spruce. Constr. Build. Mater. 64:379–386.10.1016/j.conbuildmat.2014.04.039Search in Google Scholar
©2019 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Original Articles
- Influence of tree height on the hydrophilic and lipophilic composition of bark extracts from Eucalyptus globulus and Eucalyptus nitens
- Modelling the viscoelastic mechanosorptive behaviour of Norway spruce under long-term compression perpendicular to the grain
- Frequency-dependent viscoelastic properties of Chinese fir (Cunninghamia lanceolata) under hygrothermal conditions. Part 1: moisture adsorption
- Frequency-dependent viscoelastic properties of Chinese fir (Cunninghamia lanceolata) under hygrothermal conditions. Part 2: moisture desorption
- Evolution of extractive composition in thermally modified Scots pine during artificial weathering
- Dynamic mechanical analysis (DMA) at room temperature of archaeological wood treated with various consolidants
- Visual and machine strength grading of European ash and maple for glulam application
- Evaluation of bond strength of cross-laminated LSL specimens under short-span bending
Articles in the same Issue
- Frontmatter
- Original Articles
- Influence of tree height on the hydrophilic and lipophilic composition of bark extracts from Eucalyptus globulus and Eucalyptus nitens
- Modelling the viscoelastic mechanosorptive behaviour of Norway spruce under long-term compression perpendicular to the grain
- Frequency-dependent viscoelastic properties of Chinese fir (Cunninghamia lanceolata) under hygrothermal conditions. Part 1: moisture adsorption
- Frequency-dependent viscoelastic properties of Chinese fir (Cunninghamia lanceolata) under hygrothermal conditions. Part 2: moisture desorption
- Evolution of extractive composition in thermally modified Scots pine during artificial weathering
- Dynamic mechanical analysis (DMA) at room temperature of archaeological wood treated with various consolidants
- Visual and machine strength grading of European ash and maple for glulam application
- Evaluation of bond strength of cross-laminated LSL specimens under short-span bending
