Standard Method of Test for
AASHTO Designation: T 79 ..95 (2004)
SCOPE
1.1 This method covers the procedure for the determination of flash points by the tag open-cup apparatus of cutback asphalts
having flash points ofless than 93.3°C (200°F).
Note 1-Specifications commonly designate the Cleveland Open-Cup method (AASHTO T 48)
for asphalt binders and cutback asphalts having flash points above 79.5°C (l 75°F).
The sample is placed in the tester and heated at a slow and constant rate. A small test flame is passed at a uniform rate in a level plane across the cup at specified intervals.
The flash point is the lowest temperature at which application of the test flame causes the vapor at the surface of the liquid to flash.
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