Publications

In 2008, the Roads and Traffic Authority (RTA) of New South Wales(NSW) advised all contractors to improve workmanship quality across all RTA construction projects. This followed the discovery that many structures, including bridges, were not being…

The RTA has a large and growing construction budget each year for new works. All major works are carried out under Quality Assurance (QA) contracts. QA has been used to deliver construction contracts within the RTA since the early 1990’s. Within the…

The $175 million Inner West Busway project was awarded to the Bridge to Bay Alliance in October 2007 and involved the implementation of a new city bound bus lane on the 3.5 km section of Victoria Road between Gladesville Bridge and the Crescent in…

This report summarises work conducted to establish a compaction procedure for the Austroads asphalt mix design process. Part of the early work examined overseas research and this is briefly summarised to provide supporting evidence as to the…

The Austroads asphalt mix design method was developed in 1997 and has had a number of revisions over the intervening years as test methods evolve and experience is gained. However, implementation of the method has been variable across the various…

This report summarises some of the literature dealing with the compaction of dense graded asphalt. Compaction of asphalt is usually expressed in terms of air void content. This is necessary as the aggregate which constitutes about 95% of the mass of…

The development of an Austroads asphalt mix design procedure led to adaptation and adoption of a number of overseas test methods. These test methods were then compiled into what has become a suite of Austroads test methods. The Austroads test…

This report presents a testing plan to examine the effect that multiple axle group loads (e.g. tandem, triaxles, etc.) have on the flexural fatigue performance of asphalt, and forms a component of long term Austroads project work. The testing plan…