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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: Expansion and Cracking Studied in Relation to Aggregate and the Magnesia and Alkali Content of Cement
Author(s): W. C. Hansen
Publication: Journal Proceedings
Appears on pages(s): 867-878
Keywords: no keywords
Abstract:Aggregateds from Alabama, Illinois, and Kansas were studied in concretes made with cements having 0.23 to 1.4 percent alkali and 2.1 to 4.9 percent MgO. Studies extended over a period of 105 months. It is concluded that some of the expansion and cracking of concrete made with some sand-gravei aggregates from Kansas may be caused by a combination of alkali-aggregate reaction plus the hydration of periclase. The alkali-aggregate reaction is believed responsible for starting a mechanism which permits the periclase to cause excessive expansion. The periclase content of the cement does not appear to influence cracking obtained with the Alabama aggregate.
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