The bond between reinforcing steel and the surrounding concrete can be deteriorated by corrosion. This article reports on a study in which pullout tests were carried out to evaluate the effects of corrosion on bond and bond-slip behavior, for a series of specimens with varying reinforcement corrosion levels between 0% and 9%, and for specimens with and without stirrups that provide confinement. Specimens with both smooth and deformed bars were tested. The tests were designed to provide the data required to assess the bond properties, including the ultimate bond strength and free-end slip for various degrees of corrosion under pullout loads. The authors conclude that for deformed bars without confinement, bond strength was very sensitive to corrosion levels and generally decreased with the corrosion level. For deformed bars with confinement, corrosion had no substantial influence on the bond strength. For smooth bar without confinement, when corrosion level was low, bond strength increased as corrosion level increased. For smooth bar with confinement, bond strength increased as corrosion level increased, up to a relatively high degree of corrosion.

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    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
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  • Publication Date: 2004-11


  • English

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  • Accession Number: 00986479
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 8 2005 12:00AM