THE EFFECT OF MINERAL ADMIXTURES ON THE ALKALI-SILICA EXPANSION OF CONCRETE UNDER OUTDOOR EXPOSURE CONDITIONS --PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON CONCRETE ALKALI-AGGREGATE REACTIONS, OTTAWA, CANADA, 1986

The results of experiments to establish the effects of different mineral admixtures on the expansion of concretes, made with alkali-reactive greywacke/hornfels aggregate and high-alkali cement, are discussed. The concrete specimens were exposed outdoors and the results should be applicable to concrete structures in practice. The following mineral admixtures were used: milled granulated blast-furnace slag (mgbs); fly ash; calcined shale; and condensed silica fume. The cubes and beams tested were exposed outdoors for 4 and 6 years respectively. The results obtained indicated that replacement of cement by mgbs, fly ash, or silica fume can be effective in preventing expansion due to the alkali-silica reaction. Details are provided of the quantities of each that are needed in order to be effective for specified active alkali contents of the concrete. For the covering abstract of the conference see IRRD 811982.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0815511426
• Corporate Authors:

  NOYES PUBLICATIONS

  MILL ROAD
  Park Ridge, NJ  United States 
• Authors:
  • Oberholster, R E
  • DAVIES, G
• Publication Date: 1987

Language

• English

Media Info

• Pagination: p. 60-5
• Serial:
  • Publication of: NOYES PUBLICATIONS
  • Publisher: NOYES PUBLICATIONS

Subject/Index Terms

• TRT Terms: Admixtures; Aggregates; Alkali; Calcined aggregates; Chemical reactions; Concrete; Conferences; Expansion; Fly ash; Granulated slag; Mix design; Oxides; Pozzolan; Prevention; Silicon; Weathering
• Geographic Terms: South Africa
• Subject Areas: Data and Information Technology; Geotechnology; Security and Emergencies;

Filing Info

• Accession Number: 00481125
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-8155-1142-6
• Files: ITRD, TRIS
• Created Date: Apr 30 1989 12:00AM