Authors: Yi Min Wei Bunichiro Tomita
Publish Date: 2001/12/01
Volume: 47, Issue: 6, Pages: 437-444
Abstract
There is a growing desire to improve the properties and use of nonwood plant materials as supplements to wood materials for wood cementbonded boards WCBs This study was conducted to determine the comparative properties of WCBs containing various amounts of discontinuous inorganic fiber materials such as alkaliresistant glass fiber normal glass fiber mineral wool and nonwood plant materials such as retted flax straw and wheat straw particles Tested cementbonded boards were made at wood/additive compositions of 100/0 90/10 80/20 70/30 60/40 and 50/50 weight percentages Seventyeight laboratoryscale WCBs were produced Various board properties such as the modulus of rupture MOR internal bonding strength IB water absorption WA thickness swelling TS and linear expansion LE were studied The test results showed that three types of discontinuous inorganic fiber used as reinforcing materials in composites significantly enhanced and modified the performance of WCBs The mechanical properties and dimensional stability of cementbonded board were significantly improved with increasing amounts of the additives MOR and IB were increased and WA TS and LE of boards were reduced by combination with the inorganic fiber materials The results also indicated that combination with retted flax straw particles only slightly increased the MOR of boards and wheat straw particles led to marked decreases in all the mechanical properties and the dimensional stability of WCBs
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