Resources

Performance specified maintenance contracts (PSMC) have been operational in New Zealand for more than six years.

Investigations into the cohesive properties and oxidation resistance of an acid cured, epoxy modified open-graded porous asphalt (OGPA) were undertaken and an associated accelerated loading test carried out at Transit New Zealand’s CAPTIF facility.

Deck joints are a potential source of deterioration and maintenance problems in a bridge structure and have been identified as the most common maintenance problem in New Zealand road bridges.

Dipentene (a solvent derived from radiata pine) and toluene were investigated as alternatives to the ozone-depleting methyl chloroform used in bitumen content determinations of asphalt.

In order to improve the efficiency of the road transport industry in New Zealand, a range of mass limit increases for heavy vehicles has been proposed.

This report investigates traffic patterns and estimation of annual average daily traffic, and suggests a basis for a traffic count monitoring programme based on Transit New Zealand's regular traffic monitoring strategy.

This report describes the results of a project to investigate the quality of road survey data collected from road networks in New Zealand.

A limited survey of roading practitioners was carried out to determine their opinion and needs with respect to communicating the findings of research about the properties of unbound aggregates.

Endurazyme #388 is a proprietary bioenzyme stabiliser designed to allow greater use of marginal in-situ pavement materials.

Criteria for selecting riprap to protect bridge abutments against scour were investigated.