Title:
Effect of Fly Ash on the Durability of Air-Entrained Concrete
Author(s):
S. H. Gebler and P. Klieger
Publication:
Symposium Paper
Volume:
91
Issue:
Appears on pages(s):
483-520
Keywords:
admixtures; air-entrained concretes; chlorides; cold
weather construction; concrete durability; corrosion; curing;
deicers; fly ash; freeze-thaw durability; mineral admixtures;
permeability; pozzolans; scaling+.
DOI:
10.14359/10085
Date:
2/1/1986
Abstract:
Concretes containing fly ash were evaluated to establish the effect of the fly ash on freeze-thaw resistance, resistance to deicer scaling, and chloride ion penetration. The effects of low temperature curing and moisture availability during curing were also evaluated. These tests indicated that the freeze-thaw resistance of air-entrained concrete was reduced by the use of certain fly ashes when cured at low temperature. For other conditions there was no significant influence of fly ash . Deicer scaling resistance tests showed that air-entrained concrete without fly ash generally performed somewhat better than concrete with fly ash, regardless of the type of curing provided. Air-entrained concretes made with some fly ashes were as resistant to chloride ion penetration as air-entrained concrete without fly ash. The class of fly ash did not significantly influence the degree of chloride ion penetration.