Physico-mechanical properties and anatomical structure relationship of solid bamboo and bikal
2000
Forest Products Research and Development Inst., College, Laguna, Philippines
The anatomical (fibrovascular bundle frequency, dimension of vessel elements and fibers, external morphological features) and physicomechanical (relative density, moisture content, shrinkage characteristics, maximum crushing strength in compression parallel to grain, shear and static bending) properties of bikal (Schizostachyum diffusum) and solid bamboo [Pendrocalamus strictus (Roxb.) Nees], two lesser-used bamboo species, were determined. In bikal, the middle portion of the culms showed the highest moisture content and percentage shrinkage in both tangential and radial directions, but with the lowest specific gravity values. Bending properties (FSEL, MOR, MOE) decreased from butt to top. The nodal portions for both shear and maximum crushing strength tests displayed higher strength values that the internodal portions, and a similar decreasing trend as in the bending properties. In solid bamboo, specific gravity values increased from butt to top in both young and mature culms, with the latter showing higher values. On the other hand, the young culms exhibited higher moisture content than the mature culms. Bending properties decreased from butt to top
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