Abstract
There are limited published studies related to the mechanical properties of bamboo species in the Philippines. In this study, the shear strength properties of some economically viable bamboo species in the Philippines were properly characterized based on 220 shear test results. The rationales of selecting this mechanical property are the following: (1) Shear strength, parallel to the fiber, has the highest variability among the mechanical properties; and (2) Shear is one of the governing forces on joint connections, and such connections are the points of failure on bamboo structures when subjected to extreme loading conditions. ISO 22157-1 (2017) test protocol for shear was used for all tests. The results showed that Bambusa blumeana has the highest average shear strength, followed by Gigantochloa apus, Dendrocalamus asper, Bambusa philippinensis, and Bambusa vulgaris. However, comparative analysis, using One-way ANOVA, showed that shear strength values among these bamboo species have significant differences statistically. A linear regression model is also established to estimate the shear strength of bamboo from the physical properties. Characteristic shear strength is also determined using ISO 12122-1 (2014) for future design reference.
Highlights
This study aims to develop the same correlation for Philippine bamboo species
A total of 120 specimens were tested for Gigantochloa apus, Bambusa philippinensis, Bambusa vulgaris, and Dendrocalamus asper with 30 specimens for each bamboo species, while 100 specimens were tested for Bambusa blumeana species
A total of five (5) bamboo species were selected in this study to determine the shear strength parallel to fiber using the (ISO 22157-1) shear test method
Summary
There is a pervasive drive to shift towards sustainable practices in the construction industry. Such spread in sustainable practices is due to climate change and environmental impacts that construction makes [1]. Bamboo is known in some parts of the world as “green gold” as this fast-growing grass plant has proven to combat several global challenges, which include rural poverty, land degradation, deforestation, urban development, unsustainable resources, and climate change [2,3]. Bamboo forests are known to be a significant carbon sink in global carbon cycles, especially in China. Since the 1950s, carbon stocks in bamboo forests have risen considerably, from 318.55 to 631.58 Tg C [4,5]
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