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Research Report 693 Aggregate supply and demand in New Zealand

Published: | Category: Environmental sustainability , Research programme , Research & reports | Audience: General

The purpose of this research was to better understand transport sector requirements in relation to the access, supply, demand and use of aggregates to enable sustainable sourcing of materials. 

Transport accounts for approximately 50% of aggregate use in New Zealand.

The research has found that demand for aggregate nationally or within regions for infrastructure is largely unknown and therefore cannot currently be managed.

Data on aggregate supply and the demand for various types of transport infrastructure is scarce or very difficult to obtain to allow aggregated findings.

There will need to be collaboration amongst central infrastructure agencies to ensure an ongoing national conversation can be held across central and local government agencies, industry and research organisations to develop various aspects of the report recommendations.

Keywords: aggregates, demand, econometric model, land transport infrastructure, roads, resource use, supply, sustainability



D Wilson, University of Auckland

B Sharp, University of Auckland

MS Sheng, University of Auckland

A Sreenivasan, University of Auckland

M Kieu, University of Auckland

V Ivory, WSP New Zealand Ltd, Lower Hutt

Publication details

  • Author:
  • Published: August 2022
  • Reference: 693
  • ISBN/ISSN: 978-1-99-004473-1 (electronic)