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Brite Euram program on steel fibre concrete subtask: durability : corrosion resistance of cracked fibre reinforced concrete.



Title: Brite Euram program on steel fibre concrete subtask: durability : corrosion resistance of cracked fibre reinforced concrete.
Author(s): D. Nemegeer, J. Vanbrabant, H. Stang
Paper category : conference
Book title: International RILEM Workshop on Test and Design Methods for Steelfibre Reinforced Concrete
Editor(s): B. Schnütgen and L. Vandewalle
Print-ISBN: 2-912143-38-1
e-ISBN: 2351580168
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 47 - 66
Total Pages: 20
Nb references: 20
Language: English


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 18 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 cubes mechanically tested and for 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 16 µm.


Online publication: 2003-02-15
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2351580168.004