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Strength, Durability and Creep of Fly-Ash Concrete: Part I

by Robert L. Day, Univ of Calgary, Canada,



Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials

Abstract:

In this paper, strength of concretes and mortars containing various proportions of fly ash were examined. For strength tests four types of Canadian and one type of American ash were used in combination with a Type 10 (I) Portland cement. Strength results include (a) strength development from 2 to 1000 days of normal- and heat-cured mortars with 50% cement replaced (by mass); (b) strength development of plain and fly ash concretes designed by practical, rational mix-design procedures; (c) strength development of plain and fly ash concretes cured at cold-temperature (0?C). Most of the fly-ash mortars and concretes show a good rate of strength gain over a wide-range of mix-proportions and curing conditions. However, concretes where a high proportion of cement is replaced by ash show a very slow rate of strength gain when cured at cold temperatures.

Subject Headings: Strength of materials | Fly ash | Mortars | Concrete | Curing | Material durability | Creep

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