Decay resistance of thermally-modified Eucalyptus grandis wood at 140 °C, 160 °C, 180 °C, 200 °C and 220 °C

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• 作者：Fred Willians Calonego ; Elias Taylor Durgante Severo ; Edson Luiz Furtado
• 关键词：Thermally-modified wood ; Eucalyptus grandis ; Decay resistance ; Picnoporus sanguineus ; Soil-block test
• 刊名：Bioresource Technology
• 出版年：2010
• 出版时间：December 2010
• 年：2010
• 卷：101
• 期：23
• 页码：9391-9394
• 全文大小：172 K

文摘

The objective of this study was to evaluate the effect of thermal treatment on the biological resistance of Eucalyptus grandis wood to the decay fungus Picnoporus sanguineus. Boards from 5 years and 11 months old E. grandis trees, taken from the stock possessed by the Duratex-SA company, were thermally-modified at 140 °C, 160 °C, 180 °C, 200 °C and 220 °C in the Laboratory of Wood Drying and Preservation from UNESP, Botucatu, SP, Brazil. Samples of each treatment were treated according to ASTM D-2017 (1994). The experiment tested the accelerated decay caused by the decay fungus P. sanguineus on a system of soil-block wood. The results of thermal treatment showed that an increase of temperature of 180–220 °C caused reductions of between 15.7 % and 82.4 % in the weight loss in the samples from E. grandis incubated with P. sanguineus.