Resources

The object of this study was to gather data on the levels of bitumen oxidation found in dense asphalt surfacings.

There have been a number of high-profile early failures in New Zealand pavements (rut depths greater than 20mm observed early in the pavement life) associated with ‘greenfield’ pavements (pavements not subjected to traffic during construction).

Investigations into the cohesive properties and oxidation resistance of an acid-cured, epoxy-modified open-graded porous asphalt (EMOGPA) were undertaken, and an associated field trial constructed on State Highway 1 in Christchurch in December 2007.

Hollow core units for bridge spans of various length.

The objective of this project was to investigate the practicality of adopting the AS 5100 bridge design standard for New Zealand.

In recent years, the standard practice in New Zealand regarding binder selection for state highways has been to use harder penetration grade binders and reduced diluents, after some research indicated that the use of harder binders slowed the onset o…

Spatial Information Systems (SIS) have been developed to a stage (in 1994) where they are of significant value as a management tool to organisations that administer geographically distributed assets, such as roads.

New Zealand granular pavement design is currently based on the assumption that all deformation of the pavement shape under traffic loading occurs in the subgrade.

This research proposes a new practical method for predicting the performance of unbound granular materials, including alternative, industrial by-products and recycled materials in New Zealand.

New Zealand started a Long-Term Pavement Performance (LTPP) programme on the state highway network during 2000.