Publications

This report details investigations that were conducted to verify the new Austroads sprayed seal design guidelines.

To verify the appropriateness of the proposed basic voids factor (Vf), and the initial sealing design approach (and also to validate…

This report describes research into development of a laboratory sprayed seal binder cracking test which can be used to measure the relative fatigue cracking resistance of thin binder films which have thicknesses comparable to the thicknesses of the…

If we knew the work that goes into the planning and pre-construction activities of a new bridge project

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…

Some recent problems with polymer modified binder (PMB) seals have been attributed to lack of initial adhesion of the binder to the sealing aggregate. This suggests that higher levels of cutter than those given in an Austroads Guide may be necessary.…