ISSN: 0149-6123
Page Count: 4

Significance of Interrupted Testing on the Freeze-Thaw Resistance of Fly Ash Concrete by ASTM C 666 (Method A)
Langan, BW
Senior instructor, University of Calgary, Alberta

Ward, MA
Vice-president—Research, University of Calgary, Alberta

Abstract

This investigation studied the effect of interrupted testing combined with prolonged freezing on the freeze-thaw resistance of concretes containing fly ash as part of the cementitious fraction, using ASTM Test Method for Resistance of Concrete to Rapid Freezing and Thawing (C 666-84, Method A). Also studied was the effect of “marginal” air contents on the above test parameters. Test results indicate that for fly ash concretes with air contents in excess of 5%, interrupted and/or prolonged periods of freezing do not affect the freeze-thaw resistance of the concrete. Early age freezing (14 days) of fly ash concretes did not appear to be detrimental to the performance of the fly ash concretes tested.

Keywords:
durability, fly ash, freeze-thaw testing, concrete

Paper ID: CCA10076J
DOI: 10.1520/CCA10076J
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