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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: The Function of Entrained Air in Concrete
Author(s): Henry L. Kennedy
Publication: Journal Proceedings
Appears on pages(s): 529-544
Abstract:The use of air-entraining agents in portland cement concrete shows considerable promise, particularly in highway concrete where resistance to scaling is an important factor. The need for fundamental research regarding the mechanism by which entrained air functions is suggested and methods of tests are out- lined. Some results of exploratory investigations of the action of air-entraining agents on the individual con-stituents of concrete are reported. It is indicated that the action of air-entraining agents in cement paste differs materially from their action in con- crete. The effect of air-entraining agents on neat cement paste suggests a probable maximum cement content of concrete, above which the beneficial effect of air-entraining agents may become negli- gible, their effect on strength remaining unchanged.
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