Publications

This document provides a guide to preparing samples for asphalt mix design to conform to Austroads design processes. It covers splitting of the raw components as well as compacting cylindrical and prismatic samples. The loose asphalt conditioning…

Road safety in rural and remote areas of Australia and New Zealand continues to be a major area of concern. Analysis of crash data also shows that a substantial proportion of crashes in these areas involve heavy vehicles. On average there have been…

The benefits of using modern wire rope fences along roadsides as a safety barrier are well documented. Increasingly, this form of safety barrier treatment is being used in wide medians along divided carriageways for new freeways and motorways across…

Part 4I: Earthworks Materials provides advice on the general requirements for earthworks materials and the characteristics of material types used in a range of specific applications. The advice has been generally developed from the approaches…

A road trial was established at Gisborne on the Calder Highway. The aim of the trial was to review the performance of sprayed seals constructed from a number of binder types. Class 170 is typically used in Victoria for sprayed seals and a section…

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…

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,…

This report provides a practical and comprehensive representation, in the form of case studies, which outline successful approaches to the identification and planning of road freight routes in urban and rural areas by a number of state jurisdictions.…

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…