Austroads: Transport Research and Trends

The asphalt industry is rapidly evolving, and it is widely accepted that prescriptive specifications are not necessarily well suited to take full advantage of the benefits that new and innovative technologies can provide. There is therefore a desire to develop a national performance-based asphalt specification that would allow asset owners and asphalt suppliers to take full advantage of the enhanced performance characteristics of current and emerging asphalt technologies.

This webinar, presented by Joe Grobler, provides an overview of a recently completed Austroads project undertaken to harmonise test methods used in asphalt performance specifications. The project developed three new Austroads asphalt test methods and updated several existing methods for use in future performance-based specifications.

The project also collated available flexural modulus, fatigue resistance and permanent deformation resistance test data of locally manufactured asphalt mixes to inform the future development of these performance limits.

The presenter talks about the background to the new test methods and the indicative performance limits established for modulus, fatigue and permanent deformation resistance.

This work builds on the results of the previous Austroads project that developed a national performance-based asphalt specification framework.