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
Publication: Journal of Materials in Civil Engineering
Volume 16, Issue 1
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.
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References
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Information
Published In
Journal of Materials in Civil Engineering
Volume 16 • Issue 1 • February 2004
Pages: 20 - 27
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Apr 22, 2002
Accepted: Mar 13, 2003
Published online: Jan 16, 2004
Published in print: Feb 2004
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