Pull-Out Performance of Timber Joints with Glued-In Densified Wood Dowels
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 8
Abstract
Densified wood (DW) dowel is worth considering as an alternative to steel rod for timber joints with glued-in rods, because it is more naturally harmonized with timber members, and has better resistance against corrosion and lower thermal conductivity. This paper compares the pull-out performance of timber joints with glued-in DW dowels to that of threaded steel rods, loaded parallel to the grain in two ambient environments with a temperature of 20°C and relative humidity (RH) of 65%, and with a temperature of 20°C and relative humidity of 85%. After being conditioned at a temperature of 20°C and relative humidity of 65%, the pull-out capacity of the glued-in DW dowels having an anchorage length of 10 times the dowel diameter was close to 75% of that of the glued-in threaded steel rods. The impact of service environment was found to be greater for the timber joints with glued-in threaded steel rods than the timber joints with glued-in DW dowels.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request, with the listed items as moisture content, slip modulus and pull-out capacity.
Acknowledgments
The authors gratefully acknowledge the support of The National Natural Science Foundation of China under Grant No. 51878114.
References
Bouchard, R., A. Salenikovich, C. Frenette, and G. Bedard-Blanchet. 2021. “Experimental investigation of joints with multiple glued-in rods in glued-laminated timber under axial tensile loading.” Constr. Build. Mater. 293 (Jul): 122614. https://doi.org/10.1016/j.conbuildmat.2021.122614.
CEN (European Committee for Standardization). 2004. Eurocode 5: Design of timber structures. Part 1-1: Common rules and rules for buildings. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2010. Timber structures—Structural timber and glued laminated timber—Determination of some physical and mechanical properties. EN 408. Brussels, Belgium: CEN.
Gonzalez, E., C. Avez, and T. Tannert. 2016. “Timber joints with multiple glued-in steel rods.” J. Adhes. 92 (7–9): 635–651. https://doi.org/10.1080/00218464.2015.1099098.
Grunwald, C., T. Vallée, S. Fecht, O. Bletz-Mühldorfer, F. Diehl, L. Bathon, S. Myslicki, R. Scholz, and F. Walther. 2019. “Rods glued in engineered hardwood products part I: Experimental results under quasi-static loading.” Int. J. Adhes. Adhes. 90 (Apr): 163–181. https://doi.org/10.1016/j.ijadhadh.2018.05.003.
Jensen, J. L., and P.-J. Gustafsson. 2004. “Shear strength of beam splice joints with glued-in rods.” J. Wood Sci. 50 (2): 123–129. https://doi.org/10.1007/s10086-003-0538-6.
Jensen, J. L., T. Sasaki, and A. Koizumi. 2002. “Plywood frame corner joints with glued-in hardwood dowels.” J. Wood Sci. 48 (4): 289–294. https://doi.org/10.1007/BF00831349.
Jung, K., S. Murakami, A. Kitamori, W.-S. Chang, and K. Komatsu. 2010. “Improvement of glued-in-rod joint system using compressed wooden dowel.” Holzforschung 64 (6): 799–804. https://doi.org/10.1515/hf.2010.117.
Kaufmann, M., J. Kolbe, and T. Vallée. 2018. “Hardwood rods glued into softwood using environmentally sustainable adhesives.” J. Adhes. 94 (11): 991–1016. https://doi.org/10.1080/00218464.2017.1385459.
Kohl, D., N. Ratsch, S. Böhm, M. Voß, M. Kaufmann, and T. Vallée. 2020. “Influence of manufacturing methods and imperfections on the load capacity of glued-in rods.” J. Adhes. 96 (8): 738–759. https://doi.org/10.1080/00218464.2018.1508351.
Koizumi, A., J. L. Jensen, and T. Sasaki. 2001a. “Structural joints with glued-in hardwood dowels.” In Proc., Int. RILEM Symp., Joints in Timber Structures, edited by S. Aicher and H. W. Reinhardt, 403–412. Stuttgart, Germany: RILEM.
Koizumi, A., J. L. Jensen, T. Sasaki, Y. Iijima, and Y. Tamura. 1998a. “Withdrawal properties of hardwood dowels in end joints I. Evaluation of shear performance of adhesives.” Mokuzai Gakkaishi 44 (1): 41–48.
Koizumi, A., J. L. Jensen, T. Sasaki, Y. Iijima, and Y. Tamura. 1998b. “Withdrawal properties of hardwood dowels in end joints II. Effect of dowel diameters, Young’s moduli of adherends, dowel spacings and numbers of dowels.” Mokuzai Gakkaishi. 44 (2): 109–115.
Koizumi, A., T. Sasaki, J. L. Jensen, Y. Iijima, and K. Komatsu. 2001b. “Moment-resisting properties of post-to-sill joints connected with hardwood dowels.” Mokuzai Gakkaishi 47 (1): 14–21.
Komatsu, K., A. Koizumi, T. Sasaki, J. L. Jensen, and Y. Iikima. 1997. “Flexural behavior of GLT beams end-jointed by glued-in hardwood dowels.” In Proc., CIB-W18 Meeting 30, edited by Rainer Görlacher. Karlsruhe, Germany: Universität Karlsruhe.
Ling, Z., H. Yang, W. Liu, W. Lu, D. Zhou, and L. Wang. 2014. “Pull-out strength and bond behaviour of axially loaded rebar glued-in glulam.” Constr. Build. Mater. 65 (Aug): 440–449. https://doi.org/10.1016/j.conbuildmat.2014.05.008.
Martín-Gutiérrez, E., J. Estévez-Cimadevila, and D. Otero Chans. 2017. “Durability of joints made with threaded steel rods glued in chestnut timber—An experimental approach.” Composites, Part B 108 (Jan): 413–419. https://doi.org/10.1016/j.compositesb.2016.10.010.
Ministry of Housing and Urban-Rural Development of the People’s Republic of China. 2017. Standard for design of timber structures. GB 50005-2017. Beijing: Ministry of Housing and Urban-Rural Development of the People’s Republic of China.
Muciaccia, G. 2019. “An experimental approach to determine pull-out strength of single and multiple axially loaded steel rods bonded in glulam parallel to the grain.” Wood Mater. Sci. Eng. 14 (2): 88–98. https://doi.org/10.1080/17480272.2017.1404491.
Otero Chans, D., J. Estévez-Cimadevila, and E. Martín-Gutiérrez. 2010. “Model for predicting the axial strength of joints made with glued-in rods in sawn timber.” Constr. Build. Mater. 24 (9): 1773–1778. https://doi.org/10.1016/j.conbuildmat.2010.02.010.
Otero Chans, D., J. Estévez-Cimadevila, and E. Martín-Gutiérrez. 2018. “Joints with bars glued-in softwood laminated timber subjected to climatic cycles.” Int. J. Adhes. Adhes. 82 (Apr): 27–35. https://doi.org/10.1016/j.ijadhadh.2017.12.010.
Parida, G., H. Johnsson, and M. Fragiacomo. 2013. “Provisions for ductile behavior of timber-to-steel connections with multiple glued-in rods.” J. Struct. Eng. 139 (9): 1468–1477. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000735.
Steiger, R., E. Gehri, and R. Widmann. 2006. “Pull-out strength of axially loaded steel rods bonded in glulam parallel to the grain.” Mater. Struct. 40 (1): 69–78. https://doi.org/10.1617/s11527-006-9111-2.
Tannert, T., H. Zhu, S. Myslicki, F. Walther, and T. Vallée. 2017. “Tensile and fatigue investigations of timber joints with glued-in FRP rods.” J. Adhes. 93 (11): 926–942. https://doi.org/10.1080/00218464.2016.1190653.
Tlustochowicz, G., E. Serrano, and R. Steiger. 2011. “State-of-the-art review on timber connections with glued-in steel rods.” Mater. Struct. 44 (5): 997–1020. https://doi.org/10.1617/s11527-010-9682-9.
Xu, B.-H., D.-F. Li, Y.-H. Zhao, and B. Abdelhamid Bouchaïr. 2020. “Load-carrying capacity of timber joints with multiple glued-in steel rods loaded parallel to grain.” Eng. Struct. 225 (Dec): 111302. https://doi.org/10.1016/j.engstruct.2020.111302.
Xu, B.-H., T.-T. Wang, K.-B. Yu, Y.-H. Zhao, and B. Zhang. 2022. “Physical and mechanical properties of densified poplar by partial delignification.” Wood Mater. Sci. Eng. https://doi.org/10.1080/17480272.2022.2128696.
Yeboah, D., S. Taylor, D. McPolin, R. Gilfillan, and S. Gilbert. 2011. “Behaviour of joints with bonded-in steel bars loaded parallel to the grain of timber elements.” Constr. Build. Mater. 25 (5): 2312–2317. https://doi.org/10.1016/j.conbuildmat.2010.11.026.
Zhu, H., P. Faghani, and T. Tannert. 2017. “Experimental investigations on timber joints with single glued-in FRP rods.” Constr. Build. Mater. 140 (Jun): 167–172. https://doi.org/10.1016/j.conbuildmat.2017.02.091.
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Published In
Journal of Materials in Civil Engineering
Volume 35 • Issue 8 • August 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Sep 13, 2022
Accepted: Jan 6, 2023
Published online: May 29, 2023
Published in print: Aug 1, 2023
Discussion open until: Oct 29, 2023
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