ASPHALT BINDERS AND ASPHALT MIXTURES - Materials for Civil and Construction Engineers - page 335

FIGURE 9.15 Rotational viscometer.

FIGURE 9.16 Dynamic shear rheometer apparatus.

and for the rutting potential test, the test temperature is equal to the upper
temperature for the grade of the asphalt binder (e.g., a PG 64-22 is tested at
64°C). For these tests, the sample size is 25 mm in diameter and 1 mm thick.
Prior to testing for rutting potential, the sample is conditioned in the rolling
thin-film oven. For evaluating fatigue potential, the intermediate temperature
is used; 25°C for PG 64-22. The sample size is 8 mm in diameter by 2 mm
thick. Prior to testing, the sample is conditioned in the rolling thin-film oven,
followed by the pressure-aging vessel.