USE OF BLAST FURNACE SLAG IN ROAD BASES

ANVAENDNING AV MESUGNSSLAGG I VAEGARS BAERLAGER

This work comprises a literature survey of British, French and Swedish experience and a study of the reactivity of blast furnace slag from the steel mills of Domnarvet and Oxeloesund. Blast furnace slag may be used in the following three basically different ways: (1) air cooled slag, which in Great Britain is considered equivalent to crushed rock in road design, (2) granulated slag, which is used in France as a binder for gravel and sand. The binding properties of granulated slag and the strength properties of slag-bound aggregates have been thoroughly investigated. The slag stabilized layers show little cracking in comparison with cement-bound layers. The material has proved suitable for strengthening of gravel roads, since the road can be trafficked immediately after laying. Swedish tests show varying results, probably due to inferior wearing courses. (3) air cooled slag bound by granulated slag. (Oxeloesund slag). After one year the compressive strength and Young's modulus are 12 mpa and 15000 mpa. The experience of test sections is very favourable. Measurements of the binding capacity of slag by means of the French reactivity coefficient showed the Oxeloesund slag to be of average quality in comparison with French granulated slag, whereas the granulated slag from domnarvet had a somewhat smaller reactivity coefficient. /TRRL/

• Corporate Authors:

  Royal Institute of Technology, Sweden

  Bridge Building Institute, Fack S-10044
  Stockholm 70,   Sweden 
• Authors:
  • Gatu, P O
  • Persson, K
• Publication Date: 1977

Language

• Swedish

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 50 p.

Subject/Index Terms

• TRT Terms: Aggregates; Base course (Pavements); Bibliographies; Binders; Blast furnaces; Cracking; Fracture mechanics; Highway design; Mills; Modulus of elasticity; Pavements; Slag; Soil stabilization; Stabilized materials; Steel; Strength of materials; Structural strengthening; Surveys; Transmissions
• Geographic Terms: Sweden
• Old TRIS Terms: Steel mills
• Subject Areas: Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I33: Other Materials used in Pavement Layers; I36: Aggregates;

Filing Info

• Accession Number: 00165639
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Monograph
• Files: ITRD, TRIS
• Created Date: Jun 14 1978 12:00AM