The Effect of Gasoline on the Charring Patterns of Burnt Fir surface
The effect of gasoline on the charring patterns on fir board surface with different combustion time and cooling mode were studied through simulating indoor fire by experiments in which digital camera was used to take pictures and get the patterns observed and the software quantitative measurement was used to carry out the difference analysis. The results showed that the fir board burned by spilled gasoline showed the phenomena of surface discoloration,crack with holes,metallic luster,and carbonization around the edge more serious than in the middle. It was known from the measurement data that with increase of burning time and compared to the fir board without spilled gasoline,the surface cracks lengthened and widened significantly,the charring area got smaller,the charring depth differed obvious,and the extinguishing method did not change the effect of gasoline on the surface charring patterns.