Reconstituted Bamboo Scrimbers Prepared from Bambusa tulda with Phenol Formaldehyde (PF) Adhesive for Structural Applications

Abstract: This study investigates the physical and mechanical properties of reconstituted bamboo scrimbers prepared from Bambusa tulda bamboo, also known as Indian timber bamboo or Bengal bamboo. The preparation involves varying pressure levels (21.0, 24.5, 28.0, and 31.5 kg/cm2 ) with phenol formaldehyde (PF) adhesive using a hydraulic hot press. The study explores the change in mechanical and physical properties of bamboo scrimbers under varying specific pressures, which significantly reduces moisture content, increases density, and enhances resistance to water absorption and swelling. Mechanically, it improves properties such as modulus of rupture (MOR), modulus of elasticity (MOE), compression parallel to the grain, hardness, and screw-holding capacity. The results position the reconstituted bamboo scrimbers in the super group (IS:3629-1986) in stress grading (MOR & MOE) at all tested specific pressures, surpassing raw bamboo strength properties as well as conventional standard timber, including Teak (Tectona grandis). The results demonstrate remarkable properties comparable to species like Sal (Shorea robusta), Khair (Acacia catechu), and Teak (Tectona grandis) in various mechanical properties. This research highlights the potential of bamboo-based materials over conventional timber in construction and for sustainable development. Future studies on different adhesives and pressure levels could further enhance their economic sustainability.