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→Grades
All of the above methods of describing the asphalt binder are based on some measure of the asphalt viscosity.
All of the above methods of describing the asphalt binder are based on some measure of the asphalt viscosity.
For Example:
For Example:<br>
'''Penetration Grades''' (such as pen 85 -100) is based on how deep a needle will push into the asphalt under a certain weight and at a certain temperature. Viscosity Grades are based on the measured viscosity at a certain temperature, and AC Grades are also based on measured viscosity, but after aging or hardening the asphalt in an oven to simulate the effect of heat on the asphalt during making of the mixture.
'''Penetration Grades''' (such as pen 85 -100) is based on how deep a needle will push into the asphalt under a certain weight and at a certain temperature. Viscosity Grades are based on the measured viscosity at a certain temperature, and AC Grades are also based on measured viscosity, but after aging or hardening the asphalt in an oven to simulate the effect of heat on the asphalt during making of the mixture.