AASHTO T 79-12 (2020) PDF Download

AASHTO T 79-12 (2020) is a standard method of test for determining the flash point of materials with a flash point lower than 93 degrees Celsius (200 degrees Fahrenheit) using the tag open-cup apparatus. Specifically, this standard is applicable to cutback asphalts.

The procedure involves placing a sample of the material into the apparatus and heating it at a constant rate. A small test flame is then passed across the surface of the liquid in the apparatus at regular intervals. The flash point is determined to be the lowest temperature at which the application of the test flame causes the vapor at the liquid's surface to ignite momentarily.

This standard provides a consistent and reliable method for determining the flash point of materials that are used in various applications, particularly in the field of asphalt production and testing. The flash point is an important property to measure as it indicates the temperature at which a material can release ignitable vapors, which is crucial for handling and storage safety considerations.