Publications

The report provides a summary of works undertaken during the period 2017&ndash

This report presents the proposed future directions for long-term pavement performance (LTPP) studies in Australasia. The proposed way forward is based on the results of a 2017 survey directed to the LTPP Project Steering Group (PSG) and Assets Task…

The aim of this project was to clarify the effectiveness of pavement maintenance (preservation) activities, in the form of periodic maintenance and rehabilitation, on pavement condition and distress (roughness, rutting and cracking) deterioration…

The report provides a summary of works undertaken during the period 2016–17 for the Austroads project AT1064 – Long-term pavement performance (LTPP).

Austroads has funded the long-term pavement performance study since late 1994. The project monitors…

Part 4B of the Austroads Guide to Pavement Technology provides a recommended approach to the design and characterisation of asphalt mixes in Australia and New Zealand. However, the approach to asphalt mix design and performance characterisation…

The temperature sensitivity (K factor) of the ball penetration test is an important parameter in estimating the embedment allowance of the overlaying seal design. A series of ball penetration tests were performed in the laboratory to investigate the…

An Austroads national workshop on stone mastic asphalt (SMA) was held to resolve differences in requirements for SMA in different parts of Australasia. Delegates decided that two mix types were required to cover the desired range of properties.…

This report reviewed various approaches to produce warm mix asphalt (WMA) and their laboratory and field assessments. Reviewed technologies are the foamed mix based products (Aspha-Min, WAM-Foam and LEA), organic additive products (Sasobit,…

A road trial consisting of five different asphalt sections was placed in Brisbane to examine the relationship between rutting in-service and the laboratory wheel tracking test. The trial was placed at the Brisbane City Council quarry at Mount Coot-…

This report provides a general overview of polyphosphoric acid modified binder. A modification mechanism between the acid and binder was proposed. The addition of acid was found to change the chemical compositions of the binder noticeably. The…