DEVELOPMENT OF A TESTING PROTOCOL FOR EFFECTS ON STRENGTH OF LABORATORY-MANUFACTURED, FIRE RETARDANT-TREATED STRANDBOARD

作者：Barnes H M; Winandy J E^*; Hill Joseph M

来源：Wood and Fiber Science, 2015, 47(1): 50-55.

• Composites
• strandboard
• fire-retardant
• treatment
• strength effects
• test protocol

This research investigated the mechanical properties of laboratory-manufactured, fire retardant-treated (FRT) strandboard in an effort to establish laboratory testing protocols for these types of composite products. This study evaluates both the initial effects of fire retardant treatment and the effects of extended high-temperature exposure. Two sets of FRT and untreated strandboard panels were manufactured and tested. Preliminary work had assessed the effect of strandboard specimen width on the stability of mean and variance estimates obtained when testing matched treated and untreated specimens with four different widths. Those results indicated that use of >= 200-mm-wide strandboard specimens decreased both variation and error associated in mean estimates compared with testing narrower-width strandboard specimens. The findings in this study show that the testing protocols developed for laboratory-manufactured, FRT strandboard were both reproducible and adequately severe. These laboratory test methods successfully identified the potential initial strength effects on strandboard performance and their potential for secondary strength loss when exposed for an extended time in a high-temperature environment minimizing the costs of using large commercial production facilities.

• 出版日期2015-1