CORROSION OF STEEL FIBRE REINFORCED CONCRETE FROM THE CRACKS

Fibers added to concrete bring a better control to cracking and improves its mechanical properties. Steel fibers are in use in pavements and slabs on soil, and in structural elements including piles, beams, spread linings, and repairs or reinforcements of tunnels and walls. This article reports on a study that investigated the corrosion of steel fibers in cracked sections. It has been reported widely that in case of steel fiber reinforced concrete (SFRC), corrosion is less active as compared with steel bars. In cracked sections, the durability of the material depends on the performance of the bridging capacity of the fibers embedded in the concrete. This study included tests were on cracked SFRC samples with 0.5-mm crack mouth openings (CMOs) exposed to marine-like environment for 1 year. The results confirm the small sensitivity of SFRC to corrosion. The strength of cracked samples exposed for 1 year to marine saline fog was not weakened, but, surprisingly, it was increased. The authors conclude that this observation is due to the light corrosion of the fibers. The corrosion is too light to depress the fiber's load-bearing capacity, but the corrosion makes the external surface of the fibers less smooth, thus the slipping of the fibers in the concrete matrix is more difficult, and the overall strength is increased.

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  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Corporate Authors:

  Elsevier

  The Boulevard, Langford Lane
  Kidlington, Oxford  United Kingdom  OX5 1GB
• Authors:
  • Granju, J-L
  • Balouch, S U
• Publication Date: 2005-3

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 572-577
• Serial:
  • Cement and Concrete Research
  • Volume: 35
  • Issue Number: 3
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Bearing capacity; Chlorides; Corrosion; Corrosion resistance; Cracking; Fiber reinforced concrete; Reinforced concrete; Reinforcing bars; Salt fog tests; Steel fibers
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00989013
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 29 2005 12:00AM