Effects of strands geometry on the physical and mechanical properties of oriented strand boards (OSBs) made from black spruce and trembling aspen

Black spruce is widely used for lumber production in Eastern Canada, and it has the potential to replace trembling aspen paper birch oriented strand board (OSB) manufacturing. This study evaluated bending modulus of elasticity (MOE) rupture (MOR), internal bond (IB), thickness swelling (TS) OSB panels made from black strands how they were affected by geometry. All met CSA O437 (1993) standard class O-2 properties except TS. The had a significantly negative effect on but positive IB TS properties. length parallel perpendicular IB, obtained better properties, while lower than those panels. results indicate that Canadian softwood industry are suitable production, more work required reduce