FRP COMPOSITE JACKETS AND CORROSION OF STEEL REINFORCEMENT - A CRITICAL REVIEW

Among the factors causing widespread deterioration of infrastructure is the corrosion of steel reinforcement used in structural concrete. There is an increasing need to develop rationale and cost-efficient methods to ease the effects of harsh environmental conditions (including deicing agents) and solution ingress through coatings. For example, bridge systems and parking garages are especially susceptible to this accelerated degradation. The use of fiber reinforced polymer (FRP) composite wraps on structural concrete components is one potential means of both rehabilitation and mitigation of corrosion. This article reviews current knowledge of the corrosion of steel reinforcement and previous investigations that assess the viability of the FRP wrap technique. The authors conclude that preliminary investigations support the use of appropriately designed FRP jackets to provide strengthening and seismic retrofit (due to confinement) as well as a barrier to migration of moisture and oxygen as a means of preventing further corrosion. The authors consider potential problems that may arise from the impermeable barrier (which could constrain the ability of the concrete to breathe) or from the opposing actions of confinement and volumetric increase. The authors also caution that the effectiveness of the FRP wrap does not provide a connection between the column and footing or superstructure; a failure due to corrosion in those areas must be dealt with through other means.

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  • Corporate Authors:

    Inderscience Enterprises Limited

    World Trade Center Building, 110 Avenue Louis Casai
    Geneva,   Switzerland 
  • Authors:
    • Herrador, M F
    • Karbhari, V M
  • Publication Date: 2004

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00986589
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 28 2005 12:00AM