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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: Frost Resistance of Superplasticized Concrete
Author(s): M. Kobayashi, E. Nakakuro,
K. Kodama, and S. Negami
Publication: Special Publication
Appears on pages(s): 269-282
Keywords: admixtures; air-entraining agents; air en
freeze-thaw durability; microscopy; mix proportionin
cizers; water-cement ratio; water-reducing agents.
Abstract:First, the paper shows the results of microscope analyses of concretes using three high-range water-reducing admixtures of different chemical compositions and having different water-cement ratios and air contents in order to determine the air-void systems of concretes containing high-range water-reducing admixtures, and also discusses the selection of the air-entraining admixture to be jointly used. Secondly, the paper deals with the relation between frost resistance and spacing factor based on the results of rapid freezing and thawing tests on concretes made with high-range water-reducing admixtures and further gives air contents or spac-ing factors required to give concrete adequate resistance to severe frost action. The results of tests on the effects of different kinds of high-range water-reducing admixtures on surface tension, foaming, and stability of air bubbles are given.
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