National harmonisation of test methods used in asphalt performance specifications

Austroads project APT6123 delivered the first component of a new Austroads performance-related asphalt specification framework. This included the development of several new test methods and updating a number of existing test methods for use in future performance specifications. The project also investigated the ability of small-scale laboratory wheel tracking devices to assess the deformation resistance of heavy-duty asphalt mixes for use in severe environments. The literature review and laboratory testing undertaken identified several limitations with the current Austroads wheel tracking test method and hence it was recommended to investigate alternative permanent deformation resistance test methods for heavy-duty mixes in severe environments. A review of available test data identified the need for road jurisdictions to develop performance limits of their locally manufactured asphalt mixes that can be included in future performance-related asphalt specifications. Based on the work undertaken to date, it is recommended that the subsequent stages of this project focus on: 1. establishing an agreed set of indicative performance limits for the properties included in the concept specification framework previously developed; 2. assessing the impact of variability in the manufacturing and placement process and test methods on the performance properties of asphalt mixes in the laboratory; 3. preparing a harmonised performance-related asphalt specification document, including any guide notes that may be required.

Media Info

  • Pagination: 149p

Subject/Index Terms

Filing Info

  • Accession Number: 01892475
  • Record Type: Publication
  • Source Agency: ARRB Group Limited
  • ISBN: 9781922700988
  • Report/Paper Numbers: AP-T375-23
  • Files: ITRD, ATRI
  • Created Date: Sep 6 2023 2:30PM