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Resources

Displaying 151 - 160 results of 729 for ""

Research Report 347 Characterising pavement surface damage caused by tyre scuffing forces

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

The transverse shear forces generated by multi-axle groups depends on many factors including turn geometry, vehicle type, axle weights, tyre size and configuration, suspension geometry, and the number and type of axles.

Research Report 345 Contaminant characterisation and toxicity of road sweepings and catchpit sediments: towards more sustainable reuse options

Published:
Category: Environmental impacts of land transport , Research programme , Research & reports | Audience: General

In 2006–2007, 35 road-derived sediments (RDS) consisting of street sweepings and catchpit (ie sump) sediments, were collected from three cities in New Zealand; namely Auckland, Hamilton and Christchurch.

Research Report 341 The prediction of pavement remaining life

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

The primary objective of the project was the development of criteria to define the end-of–life condition of pavements.

Research Report 337 Deterioration of prestressed concrete bridge beams

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

A routine inspection revealed significant corrosion of the prestressing strand on a concrete road bridge built in 1966 to a standard design used in about 117 State Highway bridges in New Zealand.

Research Report 335 Performance tests for road aggregates and alternative materials

Published:
Category: Activity management , CAPTIF , Research programme , Research & reports | Audience: General

Aggregates used as base materials in thin-surfaced granular pavements common to New Zealand contribute at least half the wheeltrack rutting and roughness seen at the surface.

Research Report 334 Flexural modulus of typical New Zealand structural asphalt mixes

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

Structural hot mix asphalt (HMA) pavements have become popular in New Zealand in recent times as heavy traffic volumes have increased and early failures of granular pavements have become more common, especially in urban areas where road maintenance c…

Research Report 332 Total voids in unbound granular pavements

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

In New Zealand excessive deformation in the wheel paths due to post construction densification has occurred in a number of new pavements constructed in recent years.

Research Report 290 Road surface texture measurement using digital image processing and information theory

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

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.

Research Report 029 Road profile characterisation

Published:
Category: Integrated land use and transport systems , Research programme , Research & reports | Audience: General

Roughness indices are used to monitor road condition and prioritise maintenance and rehabilitation programs. The most commonly used measure in New Zealand is NAASRA roughness which is based on the dynamic response of a normal passenger car.