USE OF GROUND BF-SLAG IN BASE COURSE AND IN CONCRETE. USE OF GROUND BLAST FURNACE SLAG IN BASE COURSE AND IN CONCRETE

In recent years the utilization of bf-slag has become the subject of extensive research. The research deals with granulated and pelletized slags used as a binding agent, which having the highest level of refinement offer the greatest possibilities of use. Bf-slag ground to the fineness of a portland cement requires for its becoming activated in practice that use is made of some binding agents or additives. In the vicinity of production plants air-cooled slag can be used as an aggregate in base courses of the road, which is sufficient for the activation of the binding agent. Tests on these binds of slag mixes have been extremely successful. The strength development has been rapid and no failures have been observed afterwards. When ground slag is used for binding aggregates it has to be activated for the purpose of accelerating the development of an early strength. Since its low price confers an advantage on the slag in comparison with cement, the activators should also be economical, easy to be obtained and handled. Of the activators, cement has been the most frequently tested and investigated. It has also been established that the advantage of the mixes stabilized with blended cements is that the structure has an increased frost and salt resistance, for example. Road constructors demand the rapid development of an early strength to meet the needs of traffic, but a sufficient workability time can be regarded, from the point of view of working sites, as being positive as compared with cement. The slower development of the early strength of slag-based concrete as compared with the case of cement-based concrete also indicates an increased final strength. (TRRL)

  • Availability:
  • Corporate Authors:

    Silicates Industriels

    4 Avenue Gouverneur Cornez
    B-7000 Mons,   Belgium 
  • Authors:
    • Eerola, M
  • Publication Date: 1982

Language

  • English

Media Info

  • Features: Figures;
  • Pagination: p. 61-63
  • Serial:
    • Silicate Industriels
    • Volume: 47
    • Issue Number: 2
    • Publisher: ASBL Silicates Industriels
    • ISSN: 0037-5225

Subject/Index Terms

Filing Info

  • Accession Number: 00382663
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 30 1984 12:00AM