Self-extinction of timber

Emberley, Richard, Inghelbrecht, Arne, Yu, Zeyu and Torero, Jose L. (2017) Self-extinction of timber. Proceedings of the Combustion Institute, 36 2: 3055-3062. doi:10.1016/j.proci.2016.07.077

Author Emberley, Richard
Inghelbrecht, Arne
Yu, Zeyu
Torero, Jose L.
Title Self-extinction of timber
Journal name Proceedings of the Combustion Institute   Check publisher's open access policy
ISSN 1540-7489
Publication date 2017-01-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.proci.2016.07.077
Open Access Status Not yet assessed
Volume 36
Issue 2
Start page 3055
End page 3062
Total pages 8
Place of publication Philadelphia, PA, United States
Publisher Elsevier
Language eng
Formatted abstract
Self-extinction of timber after the removal of an external incident heat flux is necessary to ensure that structures with exposed wood do not contribute to a fire after the building contents are fully consumed. Two series of tests with solid wood and cross-laminated timber were conducted to study the conditions leading to self-extinction. The heat fluxes and heating duration were varied systematically. For each test, the evolution of the in-depth temperature distribution was measured using thermocouples while the mass loss rate was measured using a load cell. The experiments were allowed to reach a steady-state mass loss rate. The in-depth temperature gradient, which represents in-depth heat losses from the pyrolysis zone, was calculated from thermocouple measurements until it reached steady-state. As the external incident heat flux increases, the mass loss rate as well as the in-depth thermal gradient reach a steady-state value. Once the steady-state mass loss rate and temperature gradient were attained, the external heat flux was removed and the flame was allowed to extinguish. Over the entire range of heat fluxes (30-100kW/m2) and heating periods used in the tests, and for all the wood types used, self-extinction was observed.
Keyword External incident heat flux
Mass loss rate
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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