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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: Study on the Flow of Highly Superplasticized Concrete
Author(s): S. Nishibayashi, S. Inoue, A. Yoshino, T. Kuroda, and T. Kume
Publication: Special Publication
Appears on pages(s): 177-188
Keywords: aggregates; blast furnace slag; flowability; limestone; reinforced concrete; rheological properties; segregation; silica fume; superplasticizers; tests; water-reducing agents; workability; Materials Research
Abstract:Aim of this study is to estimate the workability of highly superplasticized concrete, which can satisfactorily fill up all the corners of the forms in reinforced concrete without using a mechanical compactor. To place concrete into reinforced concrete members, it must have segregation resistance and high fluidity. These properties are obtained by using very fine powders with an AE-type high-range water-reducing admixture. The highly superplasticized concrete was prepared by mixing blast furnace slag and limestone powder or silica fume with ordinary portland cement. The fluidity was measured by the box flow test (with and without the reinforcement) and by rheological tests of wet-screening mortar. The effects of mix proportioning and spacing of reinforcements on the fluidity of highly superplasticized concrete have been determined.
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