Resources

This report details findings from the New Zealand Long-Term Pavement Performance Programme that aims at the development of deterioration models.

The relationships between measured truck response data and road profile variance values derived from raw road profiles for short, long and medium wavelengths were examined.

Internationally low noise porous asphalts are typically laid on top of structural asphalt layers.

This research was carried out between 2003 and 2005 at Opus International Consultants, Central Laboratories, Lower Hutt.

The costs of applying Transit New Zealand competitive pricing procedures (CPP) (brought into operation in 1991) to the letting of contracts for the engagement of professional services for Transit New Zealand-funded roading work are evaluated, based o…

The main purpose of this project is to identify appropriate traffic and loading data for use in RAMM, other pavement management systems (PMS) with treatment selection algorithms and for pavement deterioration models.

The most common form of distress of aged open graded porous asphalt (OGPA) is loss of chip from the surface (fretting and ravelling) caused by embrittlement through reaction with atmospheric oxygen.

As the demand for a cost-effective and environmentally friendly pavement stabilisation method increases, so has foamed bitumen stabilisation for unbound granular pavement layers started to gain broad acceptance worldwide.

An investigation into the application of SASW (seismic analysis of surface waves), to measure the layer thickness and material moduli of pavements to assess pavement strength, was carried out in 2003 on roads in New Zealand.

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