The effect of thermal modification of teak wood on its fire performance characteristics
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2017, Vol 97, Issue
Abstract
The effect of thermal modification of teak wood on its fire performance characteristics. This article is aimed at evaluating the effect of thermal modification of teak wood (Tectona grandisL. f.) on its reaction to fire. The monitored sets of test specimens were thermally modified at a temperature of 160°C, 180°C and 210°C. The test specimens were produced from commercial teak lumber. During the burning, we observed a weight loss every 10 seconds for the period of 10 minutes. The monitored characteristics were weight loss and burn rate. We compared the measured results with results obtained from a set of test specimens that were not thermally treated. The measured results show that thermally treated teak wood has a significantly higher weight loss when burning than untreated teak wood. The control sample of untreated teak wood had a weight loss of 4.55%. The greatest weight loss of 13.48% was found in teak wood that was thermally treated at 180°C. Teak wood thermally treated at 160°C had a weight loss of 12.77%, and teak wood treated at 210°C had a weight loss of 11.22%. The teak wood started to burn very quickly 20-30 seconds into the test. Vigorous burning occurred at 70 - 90 seconds, where the highest burn rate was observed. The burning then slowed down, followed by another increase in the burn rate. The graph shows two peaks on each curve; the first initial peak, followed by the burning peak and subsequent repeated smaller peaks. The most significant peak was produced by teak wood thermally treated at 160°C, which burned vigorously but briefly at 200 seconds.
Authors and Affiliations
HANA ĈEKOVSKÁ, Milan Gaff, Anton Oswald
Keywords
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