The validation of SUPERPAVE has become an important issue.The SUPERPAVE parameters selected for validation were aggregategrading and Fine Aggregate Angularity.

The Model Mobile Load Simulator (MMLS) and a Simple Shear Tester(SST) were used for the validation. The results of these testsare compared with South African specification tests.

It was concluded that it is difftcult to design a fine aggregatemix which satisfies the SUPERPAVE level 1 requirements for lowdesign traffic. Small variations in the nominal maximum aggregatesize of a mix may change the restricted zone of that mix. Theresult of this for a particular mix tested was that it passedthrough the restricted zone but performed well nonetheless. FineAggregate Angularity had a significant effect on the rutting susceptibilityof a mix tested. This effect, while apparent under MMLS loading,was less apparent in the results of dynamic creep and SST testing.The dynamic creep and SST tests were found to be performance indicators.These tests, however, should be supported by actual performancetests, such as the MMLS test.