USE OF MOUNTAIN PINE BEETLE KILLED WOOD TO PRODUCE CEMENT-BONDED PARTICLEBOARD

摘要

This study investigated the properties of cement-bonded particleboards made with mountain pine beetle (MPB) (Dendroctonus ponderosae Hopkins)-infected wood. Four different types of lodgepole pine (Pinus contorta var. latifolia Engelm.) particles, fromtwo different log sizes and two different years since tree death (3 and 5 yr), were considered in this study. Different formulations consisting of two cement types, two additives, various wood/cement/water ratios, and a range of additive conditions werestudied. Mechanical and physical tests were conducted to examine the properties of the specimens. The results showed that wood particles from small logs (diameter < 28 cm) of 3 yr since tree death with either type of cement and calcium chloride or magnesium chloride as the additive are the best formulations. Other formulations also showed comparable mechanical and physical properties to published results of cement-bonded products. Based on the testing results, MPB woods may be used for the manufactureof the value-added wood-cement products.