Density and Modulus of Elasticity (MOE) Distribution and Grading of Flattened Bamboo Boards
2025
Xun Luo | Jiarui Xu | Yuquan Li | Zhiru Song | Zhen Jiang | Xiubiao Zhang | Chunping Dai | Hu Miao | Huanrong Liu
The standardization of physical and mechanical properties is critical for the large-scale application of engineered bamboo products. In this study, the distribution characteristics of density and modulus of elasticity (MOE) were systematically examined in a large sample of flattened bamboo boards. The density and MOE ranged from 0.46 to 1.12 g/cm3 and 5.60 to 22.18 GPa, respectively. Both exhibited a decreasing trend with increasing board thickness. Based on interquartile analysis, four density grades and five MOE grades were established. A strong positive correlation was identified between density and MOE, indicating that density&mdash:closely linked to fiber volume fraction&mdash:is the primary factor influencing mechanical performance. Notably, the graded bamboo boards demonstrated significantly higher modulus values than conventional wood veneers such as hemlock and poplar, highlighting their potential for high-performance structural applications. This study proposes a practical grading framework that contributes to the standardization and broader engineering utilization of flattened bamboo boards.
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