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Repair of water power dams and harbours



Title: Repair of water power dams and harbours
Author(s): Bertil Persson
Paper category : conference
Book title: International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur
Editor(s): J. Weiss, K. Kovler, J. Marchand, and S. Mindess
Print-ISBN: None
e-ISBN: 2912143926
Publisher: RILEM Publications SARL
Publication year: 2004
Nb references: 30
Language: English


Abstract: This article emphasises a description of experimental and analytical studies of workability, freezing and thawing resistance and internal frost resistance of SCC with different water-binder ratio, w/b and increased amount of air content. A comparison was done between the corresponding properties of normal concrete, NC, cast submerged, both concrete types intended for submerged repair of dams, foundations and columns. Twelve SCC with w/b = 0.35, 0.40 or 0.45 and 12 NC with w/b varying between 0.45 and 0.78 were studied. The air content of NC varied between 1 and 11% vol. The strength development was followed in parallel. The tests were carried out in fresh water or in water with 3% of sodium chloride. The temperature during testing varied between +/- 20 °C, twice a day. The results indicate that SCC with w/b = 0.40 and 7.5% silica fume may be used for submerged repair without adding Viscosity Modifying Agents, VMA. Recommendations are presented for mix proportions of SCC intended for submerged concrete repair.


Online publication: 2004-03-25
Classification: Self-Consolidating Concrete
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143926.041