Overview
The asphalt mixture performance tester (AMPT) is the companion performance test for use with the Superpave mix design procedure. Although the original SHRP asphalt research program was essentially done by 1993, it did not include a performance test for use with the rest of the Superpave mix design procedure.
The AMPT is actually a testing machine (Figure 1 and Figure 2 show early versions) capable of performing several tests relating to HMA performance. The SPT can perform a flow time test, a flow number test (a repeated load test) and a dynamic modulus test.
