Objective: To assess the flash and fire point of bitumen
Apparatus
Special container with thermometer
Theory
Bituminous material trails out volatiles at high temperatures relying on their review. These unstable vapors discover fire creating a blaze. The flash point is the most reduced temperature at which streak happens because of start of unstable vapors when a little fire is acquired contact with the vapors of a bituminous item, slowly warmed under institutionalized condition. At the point when bituminous material is further warmed to a higher temperature, the material itself gets and keeps on smoldering; the most reduced temperature creating this is the fire point. Fire point is constantly higher than blaze point.
The flash point of a material is the most reduced temperature at which vapor of a substance immediately take fire as glimmer.
The fire point is the most minimal temperature at which the material gets touched off and blazes under particular states of test.
Method
All parts of container are cleaned and dried completely. Material is filled into glass upto filling mark. Cover is set to close the container in a shut framework. All adornments including thermometer of determined range are appropriately settled. Bitumen test is then warmed. Blending is done at standard interims. The test fire is lit and connected at interims relying on expected blaze and fire point. To start with application is made at around 17°C beneath genuine glimmer point and after that at each 1°C. Blending is ended amid the use of the test flame.
Result
Flash point of bitumen =
Fire point of bitumen =
Recommended value
The minimum value of flash point by Pensky Martens closed type apparatus is 175°C for all types of bitumen.