Skip to content

Important notice

The building where our contact centre is based was evacuated on 13 June. Our contact centre and emails are up and running again, but please be patient as we have limited support available. We’ll do our best to help you if you need to contact us. For more information, read our latest media release.

Access keys for nzta.govt.nz

  • h Home
  • m Menu
  • 0 Show list of access keys
  • 2 Skip to content
  • 3 Skip to top
Back to Resources

Research Report 508 Improvement of the performance of hotmix asphalt surfacings in New Zealand

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

This research project had the objective of identifying areas where changes could be made in the use of thin layers of asphalt so that improvements in performance could be obtained. The project was not designed to investigate quality issues, but was to concentrate on materials and selection. The project was initiated because the NZ Transport Agency had found that costs of resurfacing using asphalt had escalated and the lives being achieved appeared to be short.

This research in this report, which was undertaken between 2007 and 2012, investigated the following areas:

  • analysis of currently achieved lives
  • whole-of-life costs
  • fatigue of thin surfacings
  • shear strength
  • durability of open graded porous asphalt (OGPA)
  • acceptance schemes.

Publication details

  • Author:
  • Published: April 2013
  • Reference: 508
  • ISBN/ISSN: 978-0-478-40705-1
Top