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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: Durability of Steel Fibre Reinforced Concrete
Author(s): A. Lambrechts, D. Nemegeer,
J. Vanbrabant, and H. Stang
Publication: Special Publication
Appears on pages(s): 667-684
Keywords: corrosion; cracked concrete, electrochemical analysis; reinforced concrete; steel fibre; wedge-splitting test
Abstract:In the frame of a European sponsored Brite-Euram research project program, long-term exposure tests are conducted. Notched cubes are used to test the effect of exposure to different environments for different periods of time. The different environments are: outside exposure; alternatively drying and wetting for one week in lab environment; wetting in demineralised or chloride water and drying in CO2 environment. Reference testing is done after 6, 12 and I8 months. To assess the mechanical behaviour, the wedge splitting test is performed. The electrochemical testing is done on the same types of cubes in which fibres are embedded. The comparison is made between fibres bridging the crack and fibres fully embedded in the concrete. Afterwards fibres are taken out and analysed with the microscope. This is done for the cubes mechanically tested and for the cubes electrochemically tested. No decrease of strength could be found after the 18 months of exposure. The electrochemical measurements on the sensors show negligible corrosion. This is confirmed by the microscopic analysis. Maximum measured corrosion depth is 16um.
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