SUSTAINABLE USE OF AGGREGATE RESOURCES THROUGH MANUFACTURED SAND TECHNOLOGY

Several important areas of public concern have now arisen about the environmental impact of the aggregates and concrete industries; their answers to these questions will determine their survival. Environmental requirements must be met while maintaining profitable day-to day production. In Norway, crushed materials from hard-rock quarries have gained a rising market share for ready-mixed concrete and been the main product for asphalt pavements and road construction. This has been for technical as well as economic and environmental reasons. This paper outlines some of the research and development by the Norwegian company Franzefoss, which have so far obtained an improved mass balance in its quarries. It has developed a technology which has brought it closer to its objective to make concrete with 100% manufactured materials. The process of quarrying and manufacturing rock materials for use as an aggregate should be designed for optimal use of specific rock properties in relation to the aggregate's uses. Geometrical properties need to be controlled. Manufactured sand aggregates are being used, to minimise waste and use local materials. A table outlines some benefits and disadvantages of manufactured sand as concrete aggregate in some typical applications.

  • Availability:
  • Corporate Authors:

    QMJ PUBLISHING LTD

    7 REGENT STREET
    NOTTINGHAM,   United Kingdom  NG1 5BS
  • Authors:
    • DANIELSEN, S W
    • OERBOG, A
  • Publication Date: 2000-7

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 19-20,23-4,27-8
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00799668
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Oct 6 2000 12:00AM