Resources

The objective of this project was to develop and test an apparatus and procedure for determining natural frequency and damping ratio for heavy vehicle suspension systems. A test has been developed that involves supporting an axle group on collapsible…

A new mix design system for porous asphalt based on maximising the effective void content, but maintaining sufficient strength through the use of polymer-modified bitumen, was developed and trialled.

The measurement of traffic volumes on an extensive nationwide network is a very large task.

This report presents the findings from a review of the operation and completed projects conducted at the Canterbury Accelerated Pavement Testing Indoor Facility (CAPTIF) and the Australian Accelerated Loading Facility (ALF).

This report reviews South African experience of modifying aggregates with bitumen and a trial use of bitumen to modify two unsealed roads in the Central Otago district.

This report details the progress made in tests in Oklahoma, USA ,and Christchurch, New Zealand, during the period August 2004 to June 2005, exploring digital imaging technology to measure chipseal surface texture.

Accelerated pavement testing at CAPTIF (Canterbury Accelerated Pavement Testing Indoor Facility, Christchurch, New Zealand) was conducted between 2000 and 2004 on a standard two-coat chipseal that is typically used on New Zealand roads.

This report presents a state-of-the-art review of the use of thin surfacings over bound (cementitiously stabilised) pavement layers and develops a test protocol for future research, based on field evaluations of in-service trial pavements.

The current AUSTROADS (1992) pavement design procedure used in New Zealand uses a basic assumption that suggests that a vertical compressive strain applied to any subgrade will cause the same amount of plastic strain to occur irrespective of the type…

The report describes the collection and analysis of heavy vehicle data with the objectives of developing appropriate procedures for establishing the design traffic parameter and determining traffic distribution design factors.