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

Published: | Category: Research & reports , Research programme , Performance monitoring , Activity management , Natural hazard risk management , Safety, security and public health , Environmental impacts of land transport , Transport demand management , Integrated land use and transport systems , Sustainable land transport , About the research programme , Economic development | 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. Crushed melter slag was first tested in 1991 for use in constructing access roads within a steel mill complex in New Zealand. Its performance was later trialled on a state highway intersection for about 4 years (1994–1997). The report details the results of the monitoring and evaluates its use as aggregate.

Publication details

  • Author:
  • Published: 1998
  • Reference: 112

A PDF scan of this NZ Transport Agency research report is available from