A RAPID AUTOCLAVE MORTAR BAR METHOD TO DETERMINE THE POTENTIAL ALKALI-SILICA REACTIVITY OF ST. LAWRENCE LOWLANDS CARBONATE AGGREGATES (QUEBEC, CANADA)

The paper discusses the efficiency of the proposed autoclave mortar bar tests for evaluation of the potential alkali reactivity of the limestone and dolostone concrete aggregates exploited in the St Lawrence Lowlands. The influence of various parameters on the test results and the accuracy of the method were evaluated. Forty carbonate aggregates were then tested by the method and sampled along the St Lawrence Lowlands. Expansion limits are suggested based on the behavior of the aggregates under standard testing conditions and on field performance. The reaction products developed in the mortar bars during the test, as observed under the scanning electron microscope, were also investigated.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3528769
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Fournier, Benoit
  • Berube, M-A
  • BERGERON, G
• Publication Date: 1991

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 58-71
• Serial:
  • Cement, Concrete and Aggregates
  • Volume: 13
  • Issue Number: 1
  • Publisher: American Society for Testing and Materials (ASTM)
  • ISSN: 0149-6123
  • Serial URL: http://journalsip.astm.org/JOURNALS/CEMENT/cca_home.html

Subject/Index Terms

• TRT Terms: Aggregates; Alkali silica reactions; Autoclave curing; Carbonates; Electron microscopy; Expansion; Testing
• Old TRIS Terms: Autoclaving
• Subject Areas: Geotechnology; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00610803
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 31 1991 12:00AM