Publications

Overseas research has suggested that asphalt fatigue endurance limit may exist, where applied strain is sufficiently low no fatigue damage accumulates in the asphalt as the rate of asphalt healing exceeds the rate of damage accumulation. The…

The use of recycled asphalt pavement (RAP) in asphalt mixes provides a vital basis for sustainable development. Maximising the re-use of RAP in its highest value application, as new asphalt product, has significant economic and environmental…

This report is the final deliverable of a three year Austroads project to improve the design procedures for asphalt pavements. The object of the work in this final year was to validate the proposed improved procedures for the characterisation of…

This report gives information on the development of a procedure to fractionate bitumen using an Iatroscan liquid chromatography system, and also presents test results on a range of Australian bitumens. An introduction discusses the topic of bitumen…

The suitability of the CoreLok device was assessed for estimating the bulk density of compacted asphalt specimens. The device encloses a sample in a plastic bag which is subjected to vacuum and sealed. Results were compared to saturated surface dry…

The report documents the procedures used to commission a Cooper wheel tracking apparatus. Practical issues are discussed with emphasis on achieving a repeatable outcome. This involved checking the accuracy of the loading system and the deformation…

A pilot study examined the feasibility of using laboratory produced mix compaction curves to indicate the relative workability (ease of compaction) of asphalt mixes in the field. Five mixes of different expected workabilities were used. A roller…

An Austroads national workshop on asphalt was held to assist development of a research program and identify supplier and user risks which affect quality and performance. Delegates identified key issues under the themes of: mix design and…

Austroads has produced a series of test methods developed from various technical projects, principally in the bituminous materials area (asphalt, binders, slurry and sprayed seals). The Austroads system of managing the test methods has enabled…

This Pavement Work Tip is a practical guide to the rate of cooling of asphalt as an aid to effective compaction while the asphalt remains in a workable state.