EFFECT OF FLY ASH ON ALKALI-AGGREGATE REACTION IN MARINE ENVIRONMENT

Accelerated testing was performed on mortar to evaluate effectiveness of fly ash for controlling alkali-aggregate reaction in a marine environment. Details of the study and findings are given. Expansion of mortar depends on the type of cement and chemical reagents used for alkali adjustment, the amount of fly ash used and the exposure condition. Even with the same equivalent sodium oxide in the mixture, mortar using NaCl for alkali adjustment shows higher expansion than mortar using NaOH. The highest expansion is revealed for mortar cured in NaCl solution. The controlling effect of fly ash also depends on the type of cement and the exposure condition.

• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • Ohaga, H
  • Nagataki, S
• Conference:
  • Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete. Fourth International Conference
  • Location: Istanbul, Turkey
  • Date: 1992-5-3 to 1992-5-8
• Publication Date: 1992

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 577-590
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Alkali aggregate reactions; Cement; Fly ash; Mortar; Seas; Sodium chloride; Sodium hydroxide
• Old TRIS Terms: Acceleratetd testing; Marine atmospheres
• Subject Areas: Geotechnology; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00624322
• Record Type: Publication
• Report/Paper Numbers: SP-132
• Files: TRIS
• Created Date: Oct 14 1993 12:00AM