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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Fly Ash for Use in Concrete - A Critical Review
Author(s): E. E. Berry and V. M. Malhotra
Publication: Journal Proceedings
Appears on pages(s): 59-73
Keywords: alkali-aggregate reactions; blast furnace slags; bleeding
(concrete); chemical attack; compressive strength; concrete durability;
concretes; corrosion; fly ash; fresh concretes; hardened concretes;
Abstract:Fly ash used as a pozzolan to replace some of the portland cement in concrete often achieves energy and cost savings and imparts specific engineering properties to the finished product. To use fly ash effectively and economically it is important to understand the differences between fly ash and portland cement concretes. The differences in the rate of strength development between the two types and the ways in which this may be influenced by methods of mix proportioning are of particular importance. When properly propor-tioned and placed, fly ash concrete generally shows improved workability, pumpability, cohesiveness, finish, ultimate strength, and durability. It has been found that fly ash is of particular value in high-strength concrete. Its use has often been shown to improve the performance of concretes exposed to sulfate attack or to deterioration caused by alkali-aggregate interactions.
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