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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Behavior of Concrete Beams and Columns in Marine Environment When Corrosion of Reinforcing Bars Takes Place
Author(s): T. Uomoto and S. Misra
Publication: Special Publication
Appears on pages(s): 127-146
Keywords: beams (supports); chlorides; columns (supports); corrosion; cracking (fracturing); deterioration; ductility; galvanic corrosion; marine atmospheres; reinforced concrete; reinforcing steels; serviceability; strength; Structural Research
Abstract:Many concrete structures, such as railways and highways, are constructed along the coastal lines or over the oceans in Japan. Most of these structures are deteriorated by corrosion of reinforcing bars. To prevent the corrosion in new structures, many methods are tested and several recommendations are already presented. Considering existing structures, the largest problem now is how to decide when to repair the deteriorated structure. This paper clarifies how the behavior of concrete beams and columns changes as corrosion of reinforcing bars increases and presents an idea as to when to repair the structures in marine environment. Results from the studies carried out indicate that the deterioration of marine concrete structures caused by corrosion of reinforcing steel bars is not always directly related to strength reduction of reinforcing bars. When corrosion of reinforcing bars takes place, crack formation in concrete could lead to a greater reduction in strength and ductility of the structure than expected. The repair of the structures must be done when cracks are formed along the reinforcing bars.
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