Impact Toughness and Quasi-Static Bending Strength of Glubam
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 9
Abstract
Glued laminated bamboo (glubam) is an engineered bamboo for the potential usage in structures as an alternative to timber-based glulam. This paper focuses on the impact toughness and static bending strength of glubam, with the goal to provide basic understanding and experimental data for impact design of engineered bamboo structures. Two types of glubam, i.e., thin-strip and thick-strip glubams were investigated through impact pendulum and quasi-static bending tests. For the thick-strip glubam, testing parameters also included three types of manufacturing conditions with different degrees of carbonization of composing bamboo strips. Both comparisons among different types of glubam, and between dynamic and static bending results can effectively identify the impact resistance and mechanical properties of glubam. The dynamic impact loading resulted in higher instability and had failure modes different from quasi-static tests for glubam specimens. Experimental values of toughness, modulus of elasticity (MOE) and modulus of rupture (MOR) at different loading speed conditions are obtained.
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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.
Acknowledgments
The authors are grateful for the financial support of the National Natural Science Foundation (51978606), the Zhejiang University Center for Balanced Architecture (KH20203315C), and the Zhejiang University (Ninghai) Joint Research Center on Bio-based Materials and Carbon Neutral Development.
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Published In
Journal of Materials in Civil Engineering
Volume 35 • Issue 9 • September 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jun 18, 2022
Accepted: Feb 10, 2023
Published online: Jul 4, 2023
Published in print: Sep 1, 2023
Discussion open until: Dec 4, 2023
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