Authors:Malanit, P; Barbu, M.C; Frühwald, A
Abstract:The basic properties of Dendrocalamus asper and its suitability as a raw material for manufacture of composite panels were studied. Macroscopic characteristics, physical and mechanical properties, pH value, buffer capacity and bonding quality using different types of glue were studied. This paper deals with the mechanical properties in relation to the position along bamboo culm. D. asper shows high mechanical strength. The mean values of the modulus of rupture (MOR), modulus of elasticity (MOE), compression strength perpendicular to grain and shear strength parallel to grain are 198.52 MPa, 15,363 MPa, 14.39 MPa and 11.91, respectively. They vary with the position in the culm and depend significantly on the specific gravity. On the other hand, shear strength parallel to grain is not dependent on the specific gravity. The value slightly differs along the culm length. It is concluded that D. asper has superior mechanical properties which are comparable to certain softwood and hardwood species. It should therefore be promoted as a substitute for wood in the manufacture of structural composite lumber like Oriented Strand Board or Oriented Strand Lumber.
Keywords:adhesion; adhesives; bond strength; buffering capacity; composite boards; compressive strength; hardwoods; manufacture; me