Potential and Structural Variation of Some Selected Cultivated Bamboo Species in Peninsular Malaysia

Abstract

Screening of different cultivated bamboo species to find out potential variety of bamboo is most important. Structural variations in term of anatomy, physical and strength properties of 3 year-old cultivated Gigantochloa brang, G. levis, G. scotechinii and G. wrayi were investigated for screening purposes. The culms of these bamboos were selected, harvested and processed for subsequent studies. The results show that each species exhibited differences in the anatomy, physical and strength properties. Each species has differences in the fiber characteristics which showed significant differences between species in terms of length, diameter and lumen sizes. The vascular bundle for these genera were between 4-7/4mm 2 and were dense at the outer position in the cross section of the culm having 8.5 vascular bundle/4mm 2 , middle 4.88 vascular bundle/4mm 2 and at the inner position having 3.4 vascular bundle per/4mm 2 . The vascular bundle length was between 845-1183 μm and a width of 530-759 μm. The fibre lengths were between (1745.00-2039.98 μm), diameter (17.26-22.75 μm), lumen (3.83-8.66 μm) and wall thickness (1.3 -5.31μm). The moisture content (MC) of the bamboo in green condition ranged between 73-112%, the MC is higher at internodes (95%) compared to nodes (78%). Position at inner layer has MC at 126%, middle at 83% and outer at 41%. Density increases from outer to inner layer which started from 500 kg/m 2 at inner and increased to more than 820 kg/m 2 at outer part of bamboo at 12% moisture content. The specific gravity for all species tested was about 0.69 -0.78, but the inner position is 0.58, middle 0.73 and outer positions is 0.94. Shrinkage at radial, tangential and the volumetric were at 5-9, 7-12, and 10-17% respectively for all species. Position in a higher rate of shrinkage were at inner (8.6, 13.50, 15.44%), follow by middle (6.85, 9.72, 12.57%)

Application of Bamboo for Flexural and Shear Reinforcement in Concrete Beams

“…According to the International Standard Organization (ISO), the tensile strength of a node region is only 30% of an internode region (ISO, 2004). Results from Glenn (1950) and Khare (2005) found to be 20 ksi compared to 13 ksi for green bamboo (Wahab et al, 2012).…”

Sifat Fisis Dan Pengeringan Lima Jenis Bambu

“…Jaringan sklerenkim adalah jaringan yang dibangun dari serat mikro selulosa dalam matriks hemiselulosa dan lignin yang berfungsi memberikan kekuatan, fleksibilitas, dan kekakuan pada tanaman (Jarvis, 2012). Dengan meningkatnya kerapatan batang tentu akan meningkatkan kekuatan bambu, sebagaimana di kan dari hasil penelitian bukti Wahab et al (2012b), Nordahlia et al (2012), dan Siam et al (2016). …”

Fabrication and electrical characterization of bamboo fiber-reinforced polypropylene composite

“…Earlier researchers have worked on the anatomy of bamboo fiber with different age and different height. 13,14 Some researchers have given attention on the bamboo micro fiber, which was extracted by chemical process. 9,15,16 The effective utilization of reinforcement, bamboo fiber, depends strongly on the ability to disperse the reinforcements homogeneously throughout the matrix.…”