Paper presented at the 23rd Annual Southern African Transport Conference 12 - 15 July 2004 "Getting recognition for the importance of transport", CSIR International Convention Centre, Pretoria, South Africa. According to pavement performance tests this paper analyzes six HMA mixes which
gradations are BRZ, CRZ, TRZ, HRZ, ARZ and AC-16 by Chinese Specification respectively.
The restricted zone may not be necessary to follow every performance when all other relevant
requirements of Superpave design are requested. HMA mix's pavement performance is
optimal when the gradation is through the restricted zone.
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