QUALITY OF STEEL SLAG AGGREGATES
Steel slag aggregates have been used in premium surface course hot-mix asphalt for Ontario highways since the early 1970s. Asphalt pavement performance problems led to the Ontario Ministry of Transportation imposing a moratorium on the use of steel slag aggregates in late 1991. The problem has been investigated from the steelmakers producing the slag through to hot-mix design and production. Steel slag can make good aggregate for use in hot-mix asphalt if the volume expansion of the slag is controlled. Performance based testing of steel slag aggregates, particularly volume stability, is recommended as a measure of the aggregate quality. Practices at the steelmaker and the slag processor were examined. The production of acceptable quality steel slag aggregates requires a total quality management of all steps of aggregate production and processing, and hot mix production and placement.
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Corporate Authors:
Transportation Association of Canada (TAC)
401-1111 Prince of Wales Drive
Ottawa, Ontario Canada -
Authors:
- Farrand, B L
- Emergy, J J
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Conference:
- 1995 TAC Annual Conference Proceedings. Volume 2 - Structures and Environment Sessions
- Location: Victoria, British Columbia, Canada
- Date: 1995-10-22 to 1995-10-25
- Publication Date: 1995
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: v.p.
Subject/Index Terms
- TRT Terms: Aggregates; Aggregates by source; Hot mix asphalt; Slag coarse aggregates
- Uncontrolled Terms: Aggregate sources
- Geographic Terms: Ontario (Province)
- Subject Areas: Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 00720490
- Record Type: Publication
- Files: TRIS, ATRI
- Created Date: Apr 9 1996 12:00AM