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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: Twenty Years of In-Situ Exposure to Extremely Aggressive Environment of 36 Edge Beams Cast Using Silica Fume, Fly Ash and Polypropylene Fibres
Author(s): B. Buhr, E. S. Larsen, K. Eriksen,
E. Stoltzner, and P. Fidjestik
Publication: Special Publication
Appears on pages(s): 143-164
Keywords: bridge beams; compressive strength; durability; fly ash; long-term performance; petrographic analysis; polypropylene fibres; silica fume
Abstract:Some of the edge beams of the Fiskebek bridge in Denmark were cast using a number of concrete types with varying contents of silica fume (0%, 10%, 17%, 20%, and 50% by mass of cement), fly ash (0%, 40%, 45% by mass of cement) and polypropylene fibres (1.25% vol., 1.75% vol.). The edge beams were cast and placed on the bridge in 1980 - 81. Investigations over the years cover visual inspections, freezing and thawing tests, detailed chloride profiles (after 13 and 21 years of in-situ exposure and in the laboratory), compressive strength tests (at 28 days and 20 years after casting) and petrographic analysis on thin sections (at time of casting, 3, 6, 13 and 20 years after casting). The paper presents the results covering among others the correlation between the diffusion coefficient, silica fume content and equivalent water-cement ratio. In addition the results from determination of the number of micro cracks, silica fume content, equivalent water-cement ratio and compressive strength are presented.
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