The commonly used flash point test methods include The test is performed by heating an asphalt sample in an open cup at a specified rate and determining the temperature at which a small flame passing over the surface of the cup will cause the vapors from the asphalt sample temporarily to ignite or flash. The flash point test determines the temperature to which an asphalt can be safely heated in the presence of an open flame. ![]() Read a detailed procedure of Bitumen Penetration Test with Sample Data The penetration test can be used to designate grades of asphalt cement, and to measure changes in hardness due to age hardening or changes in temperature. Other test conditions that have been used include A softer asphalt will have a higher penetration, while a harder asphalt will have a lower penetration. ![]() ![]() The amount of penetration of the needle at the end of 5 seconds is measured in units of 0.1 mm (or penetration unit). In the standard test condition, a standard needle of a total load of 100 g is applied to the surface of an asphalt or Liquid bitumen sample at a temperature of 25 ☌ for 5 seconds. Procedure of Penetration Test on Bitumen:
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