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Resources

Displaying 221 - 230 results of 233 for ""

Research Report 112 Use of melter slag as aggregate in open-graded emulsion mixes

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

Melter slag is a major by-product of the steel manufacturing process, and its potential for use as an aggregate in open-graded emulsion mixes (OGEMs), is the topic of this report.

Research Report 110 An alternative to the sand circle test for measuring texture depth

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

The reproducibility and repeatability of the sand circle test for measuring texture depth in pavement surfaces was compared with a new test using wallpaper size and a flexible perspex plate covered by a rubber pad.

Research Report 602 Evaluation of shear connectors in composite bridges

Published:
Category: Activity management , Research programme , Research & reports | Audiences: Advice and assistance, General, Road controlling authorities

There are approximately 270 bridges on New Zealand’s state highway network and many more bridges on local roads with steel concrete composite superstructures.

Research Report 599 Review of the NZ Transport Agency treatment selection algorithm

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

The objective of this research, carried out between 2012 and 2015, was to improve the treatment selection algorithm (TSA).

Research Report 598 Cracking in specialist surfacing systems

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

Specialist surfacings such as high-friction and coloured traffic-calming surfaces have gained huge popularity since their introduction.

Research Report 062 Use of tyre rubber in bitumous pavements in New Zealand

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

A literature review was carried out in 1993 on the potential use of crumb-sized ground tyre rubber (GTR), obtained from recycling waste tyres, as an additive to bitumen used in constructing New Zealand pavements.

Research Report 006 Geotextiles

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

Geotextiles are permeable textile fabrics used in engineering applications.

Research Report 560 Reduced bitumen application rates using bitumen emulsions

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

This research project investigated the differences in cohesive energies of model chipseal samples prepared from bitumen emulsions, the base binders, and the kerosene cutback base binder.

Research Report 555 Optimising drainage maintenance for pavement performance

Published:
Category: Activity management , Research programme , Research & reports | Audiences: Advice and assistance, General, Roading contractors

This project was designed to investigate the importance of drainage maintenance for pavement performance and to recommend a maintenance strategy.