Testing the effectiveness of Class C and Class F fly ash in controlling expansion due to alkali-silica reaction using modified ASTM C 1260 test method

Chang Seon Shon, Shondeep L. Sarkar, Dan G. Zollinger

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

The effectiveness of several Class C and Class F fly ashes in controlling expansion due to alkali silica reactivity (ASR) was investigated based on a modified ASTM C 1260 test method. Three different strengths of NaOH solution (1N, 0.5N, and 0.25N) were used to test the reactivity of reactive and potentially reactive aggregate in mortars with 20 and 35% Class C and F fly ash replacements by mass of cement. The other variables included high and low alkali cement, extended curing time, and longer testing period of 28 days. Test results confirm that Class F fly ash is more effective than Class C fly ash in controlling expansion due to ASR, but that Class C fly ash can also be used under certain conditions.

Original languageEnglish
Pages (from-to)20-27
Number of pages8
JournalJournal of Materials in Civil Engineering
Volume16
Issue number1
DOIs
Publication statusPublished - Jan 1 2004

Keywords

  • Alkalinity
  • Cements
  • Expansion
  • Fly ash

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

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