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…

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 implementation of the online National Performance Indicators (NPIs) is a process. Project team members were very supportive and most provided either raw or processed data to ARRB. Some members further investigated various means of retrieving…

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,…

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…

This report presents a laboratory assessment of a warm mix produced using an organic additive (Sasobit wax). Three different types of mixes (control, Sasobit dry and Sasobit pre-blend) were produced at various mixing and compaction temperatures…

This report presents the definitions and calculations of five new network performance indicators. These indicators are measured on-line with the use of freeway and arterial traffic control systems. These systems provide 24-hour 7-day traffic data at…