MARINE DURABILITY OF STEEL FIBRE REINFORCED CONCRETE OF HIGH WATER/CEMENT RATIO. FIBRE REINFORCED CEMENTS AND CONCRETES: RECENT DEVELOPMENTS. PROCEEDINGS OF AN INTERNATIONAL CONFERENCE HELD AT THE UNIVERSITY OF WALES, COLLEGE OF CARDIFF, SCHOOL OF ENGINEERING, UNITED KINGDOM, SEPTEMBER 18-20, 1989

An assessment of the corrosion potential of steel fibres in concrete, on the basis of knowledge on rebar corrosion in concrete, raises serious doubts about the marine durability of steel fibres in concrete owing to their large surface area and low cover. Recent research, however, has shown that under splash/tidal zone exposure fibre corrosion does not occur provided they are embedded in uncracked concrete or in concrete with very fine crack widths. These conclusions are generally based on research using "marine" mixes of high cement contents and low water/cement ratios. This paper reports the results of a marine durability investigation on a mix of steel fibre reinforced concrete which had a cement content of 428 kg/m3 and a relatively high water/cement ratio of 0.58. The concrete was reinforced with melt extract fibres or galvanised corrosion resistant fibres. The test samples were exposed to a marine environment simulating the splash/tidal zone. The results show that resistance of steel fibres to C1 induced corrosion is equally satisfactory in mixes made with relatively low cement and high water/cement ratio as it is in rich mixes of high cement content and low water/cement ratio.(A) For the covering abstract of the conference see IRRD 827953.

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  • Corporate Authors:

    Elsevier Science Publishers

    Crown House, Linton Road
    Barking, Essex IG11 8JU,   England 
  • Authors:
    • MANGAT, P S
    • Molloy, B T
    • Gurusomy, K
  • Publication Date: 1989

Language

  • English

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  • Accession Number: 00604722
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 1-85166-415-7
  • Files: ITRD, TRIS
  • Created Date: Feb 28 1991 12:00AM