Flash point test of bitumen 40/50,60/70 and bitumen 80/100
At high temperatures depending upon the grades of bitumen 40/50 , 60/70 and bitumen 80/100 materials leave out volatiles. And these volatiles catch fire which is very hazardous and therefore it is essential to qualify this temperature for each bitumen 40/50 , 60/70 and bitumen 80/100 grade. BIS defined the ash point as the temperature at which the vapour of bitumen 40/50 , 60/70 and bitumen 80/100 momentarily catches fire in the form of ash under specified test conditions. The fire point is defined as the lowest temperature under specified test conditions at which the bituminous material gets ignited and burns.