Asphalt Mix Performance Tester(AMPT)
- NCHRP Project 9-29 developed commercial equipment which recommended three simple performance tests:
- Dynamic Modulus – Absolute value of Complex Modulus
- Flow Number – Number of repeated load cycles (repeated compressive stress pulses)corresponding to the minimum accumulation rate of change of permanent axial strain
- Flow Time – Constant load is applied to the sample and total deformation is observed.
Undefined