Abstract
In this paper the effect of fire front on the surface of wood samples (plywood and oriented strand board) was considered to estimate the effect of different wood-fire retardants. Infrared thermography was used as a diagnostic method. The ignition probability was estimated for the chosen experimental parameters for each kind of wood The fire hazard characteristics of wood after fire retardant treatment showed a significant reduction in the surface temperature and the resistance to fire for the chosen parameters of the experiment compared to the same untreated samples. The charring depth of the wood samples was determined depending on the type of wood, as well as on the type of the fire retardant used.
Highlights
In recent years, there has been an increase in the number of wildland-urban interface fires
Combustion, simulated by forest fuel (FF), consisted of pine needles (Pinus Pinaster) and represented a site with a width that was close to the size of the wood sample
The size of the sites was determined at the time when the burning layer of forest fuels completely burned out and the flame stopped screening the area under study
Summary
There has been an increase in the number of wildland-urban interface fires. The ignition of buildings in the wildland-urban interface is a serious international problem due to large-scale fires in Australia, Greece, Portugal, Russia and the USA. In Russia, where forests occupy a large territory, the wildland-urban interface fires are a national problem, and the damage to the real sector of the economy is tens and hundreds of millions of dollars per year. The investigation of initiation, propagation and suppression of wildland fires is still an urgent problem due to huge environmental and economical losses. The fire protection of buildings requires scientific developments based on experimental studies to determine the lows of ignition and burning of buildings exposed to thermal flows of model wildland fires
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