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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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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: Origin, Evolution, and Effects of the Air Void System in Concrete. Part 2-Influence of Type and Amount of Air-Entraining Agent*
Author(s): James E. Backstrom, Richard W. Burrows,
Richard C. Mielenz, and Vladimir E. Wolkodoff
Publication: Journal Proceedings
Appears on pages(s): 261-272
Keywords: no keywords
Abstract:Air-entraining agent.s of differing chemical composition produce air voids of different size, distribution, and spacing. The amount of agent also has an effect on these parameters, in general, reducing the air void size and spacing when used in increasing amounts. Air, entrained by an effective agent, in the amount recommended by AC1 Committee 613, or greater, will usually provide a satisfactory air void system and satisfactory resistance of concrete to freezing and thawing. In general, the factors which tend to reduce spacing also tend to increase freezing-thawing resistance of concrete.
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