THE EFFECTS OF SEASONAL CHANGES ON THE COMBUSTION DURATION OF THE CEDAR (Cedrus libani A. Rich.) AND ORIENTAL SPRUCE (Picea Orientalis Lipsky) WOOD SAMPLES

Abstract

In this study, the effects of the wood’s combustion properties on the combustion duration are investigated towards the protection of the wood samples from the effects of outdoor by using various impregnation and high-level processes. For that purpose, in accordance with the given principles on the standard of combustion test ASTM–E 160-50 test samples from cedar (Cedrus libani A.Rich.) and spruce (Picea orientalis L.) are impregnated with tanalith-E and wolmanit-CB impregnation materials then water based and synthetic outdoor varnishes are applied as a high level process, afterwards seasonal effects on outdoor conditions are analysed. According to the obtained findings, first failure time for spruce wood samples the peak is 457 seconds in winter and the minimum is 257 seconds in fall, for cedar wood samples the top time is 479 seconds and the minimum time is 326 seconds in winter samples. In all combustion durations, top time at spruce wood samples is 2105 seconds at control examples and minimum time is 1143 seconds in summer samples. For cedar wood samples the top time confirmed is 2707 seconds in fall samples and minimum time is 1338 seconds in summer examples