Sledovanie vplyvu tepelného toku a hrúbky drevených dosiek na čas zapálenie
Date
2023Publisher
Žilinská univerzita v ŽilineLanguage
skAuthor
Marková, Iveta
Tureková, Ivana
Ivaničová, Martina
Jaďuďová, Jana
Metadata
Show full item recordAbstract
Oriented strand boards (OSB) and particleboards (PB) are wooden boards, commonly used in building structures
or building interiors. The surface of boards may hence become directly exposed to fire or radiant heat. The aim of this paper is to
evaluate the behaviour of uncoated particleboards and OSB exposed to radiant heat. The following ignition parameters: heat flux
intensity (from 43 to 50 kW.m-2) and ignition temperature were used to observe the process of particleboard and OSB ignition.
The time-to-ignition of particleboards and OSB with a thickness of 12, 15, and 18 mm were monitored and compared. The
experiments were conducted on a modified device in accordance with ISO 5657:1997. Results confirmed the thermal degradation
of samples. Heat flux had a significant effect on time-to-ignition. OSB had a higher ignition time than particleboards and the thermal degradation of OSB started later, i.e., at a higher temperature than that of particleboards, but OSB also had a higher mass loss than particleboards. The samples yielded the same results above 47 kW.m-2
.