期刊
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
卷 35, 期 9, 页码 -出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/JMCEE7.MTENG-15071
关键词
Glubam; Carbonization; Impact toughness; Modulus of rupture (MOR); Modulus of elasticity (MOE)
This paper investigates the impact toughness and static bending strength of glued laminated bamboo (glubam) for potential use in engineered bamboo structures. The study compares two types of glubam, thin-strip and thick-strip, through impact pendulum and quasi-static bending tests. The results reveal differences in impact resistance and mechanical properties between different types of glubam and between dynamic and static bending.
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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