Self-extinction of timber

Emberley, Richard; Inghelbrecht, Arne; Yu, Zeyu; Torero, José L.

doi:10.1016/j.proci.2016.07.077

Cited by 48 publications

(42 citation statements)

References 7 publications

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“…It can be seen that both experiments follow similar trends for approximately the first 15 minutes, before the onset of delamination led to an increase in burning rate in experiment β-2, and before the delamination and reflashover cycle then repeats twice. It can be seen from Figure 5.6 that the mass loss rate never drops below around 6 g/m 2 s, and thus auto-extinction would not be expected based on the results in Chapter 3 and [98]. The same analysis for α and γ experiments is shown in Figure 5.7.…”

Section: Delamination-dominated Fire Dynamicsmentioning

confidence: 72%

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Auto-extinction of engineered timber: Application to compartment fires with exposed timber surfaces

Bartlett

Hadden

Hidalgo

et al. 2017

Fire Safety Journal

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Section: Delamination-dominated Fire Dynamicsmentioning

confidence: 72%

“…The heat release rates and mass loss rates of experiments α-3 and α-4 are shown in Figure 6.6, along with the extinction range from Chapter 3 and [98]. Mass loss rate was calculated using the data from the load cell.…”

Section: Experiments α-3mentioning

confidence: 99%

Auto-extinction of engineered timber: Application to compartment fires with exposed timber surfaces

Bartlett

Hadden

Hidalgo

et al. 2017

Fire Safety Journal

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“…In internationalen Forschungsarbeiten und Großbrandversuchen [21–24] wurde festgestellt, dass Brandräume in Holzbauweise mit nur einer ungeschützten brennbaren Oberfläche, die anderen Wände bzw. die Decke wiesen nicht brennbare Oberflächen auf, nach dem Aufbrauchen der mobilen Brandlast selbst verloschen.…”

Section: Nachbrandverhalten Von Holzunclassified

TIMpuls Grundlagenforschung zum Brandschutz im Holzbau

et al. 2020

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Im Rahmen dieses Beitrags wird das Forschungsprojekt TIMpuls vorgestellt und erste Ergebnisse der Grundlagenuntersuchungen und Brandversuche präsentiert. Der Fokus liegt hierbei auf Untersuchungen zum Abbrandverhalten von Holz, der Leistungsfähigkeit von Brandschutzbekleidungen und dem Nachbrandverhalten von Bauteilen aus Holz. Mittels Kleinbrandversuchen wurden Abbrandraten für verschiedene Holzarten unter Normbrandbeanspruchung bestimmt. In den Untersuchungen zur Leistungsfähigkeit von Brandschutzbekleidungen werden, neben den Grundlagen zur Ausbildung und Klassifizierung, Ergebnisse kleinskaliger Brandversuche dargestellt, mit deren Hilfe eine Bewertung der Leistungsfähigkeit ermöglicht wird. Weiterhin werden erste Erkenntnisse zum Nachbrandverhalten von Bauteilen aus Holz vorgestellt. Hierbei werden Randbedingungen zum Erreichen des Selbstverlöschens in Brandräumen, Erfahrungen zum Löschvorgang und konstruktive Maßnahmen zur Vermeidung von Hohlraumbränden diskutiert.

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“…Debonding can occur in CLT [8] and is characterized by large peaks in the mass loss rate data. The large peaks occur when a significant portion of either the char layer or the timber plies fall off -reducing the insulation and exposing the virgin timber to higher heat fluxes.…”

Section: Debondingmentioning

confidence: 99%

Description of small and large-scale cross laminated timber fire tests

Emberley

Putynska

Bolanos

et al. 2017

Fire Safety Journal

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A large-scale fire test was conducted on a compartment constructed from cross laminated timber (CLT). The internal faces of the compartment were lined with non-combustible board, with the exception of one wall and the ceiling where the CLT was exposed directly to the fire inside the compartment. Extinction of the fire occurred without intervention. During the fire test, measurements were made of incident radiant heat flux, gas phase temperature, and in-depth temperature in the CLT. In addition, gas flow velocities and gas phase temperatures at the opening were measured, as well as incident heat fluxes at the facade due to flames and the plume leaving the opening. The fuel load was chosen to be sufficient to attain flashover, to achieve steadystate burning conditions of the exposed CLT, but to minimize the probability of uncertain behaviors induced by the specific characteristics of the CLT. Ventilation conditions were chosen to approximate maximum temperatures within a compartment. Wood cribs were used as fuel and, following decay of the cribs, selfextinction of the exposed CLT rapidly occurred. In parallel with the large-scale test, a small scale study focusing on CLT self-extinction was conducted. This study was used: to establish the range of incident heat fluxes for which self-extinction of the CLT can occur; the duration of exposure after which steady-state burning occurred; and the duration of exposure at which debonding of the CLT could occur. The large-scale test is described, and the results from both the small and large-scale tests are compared. It is found that selfextinction occurred in the large-scale compartment within the range of critical heat fluxes obtained from the small scale tests.

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Self-extinction of timber

Cited by 48 publications

References 7 publications

Auto-extinction of engineered timber: Application to compartment fires with exposed timber surfaces

Auto-extinction of engineered timber: Application to compartment fires with exposed timber surfaces

TIMpuls Grundlagenforschung zum Brandschutz im Holzbau

Description of small and large-scale cross laminated timber fire tests

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