Resources

Data consisting of levels of scabbing (chip loss) of rating sections of New Zealand state highway chipseals, together with a seal stress classification calculated from the road geometry, were collected and analysed to look for relationships between s…

A high incidence of unexplained chip loss occurred on New Zealand roads following the 1989/90 to 1991/92 sealing seasons.

This report summarises the results of several road trials carried out in New Zealand, over 15 years between 1989 and 1998, to investigate the hardening of bitumen in chipseals.

A research project was carried out in 2001–02 to investigate subgrade soil water conditions of road pavements in New Zealand, in particular the applicability of soaked or unsoaked test specimens, and seasonal influences on subgrade stiffness.

The application of geosynthetic-reinforced soil (GRS) to permanent structures carrying roads and/or pedestrian traffic, such as highway embankments, bridge abutments and retaining walls, is rapidly increasing worldwide, because of its cost-effectiven…

This report follows on from Opus Report 95-526264.01, which recommends a test procedure for New Zealand basecourse materials.

The correlation between road roughness, as measured by the NAASRA roughness meter, and the profile factor, measured by profile beams, was investigated between 1992 and 1995.

The two main types of road surface in New Zealand are chipseal and asphaltic concrete.

Appendix A7, Intangible Costs and Benefits, of Transit New Zealand's Project Evaluation Manual (1991 edition) is reviewed.

The models of traffic-induced pavement wear, which form the basis of current pavement design and management practices, are based on static axle loads.