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Assessment of corrosion of reinforcement in concrete

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
SubjectCorrosion (of reinforced concrete)
Abstract
Durability problems arising from the corrosion of reinforcement in concrete are common, mostly due to attack by chloride ions or carbonation of the concrete by atmospheric carbon dioxide. The first is more serious in North America since the climate demands extensive use of deicing salts on highways and bridges. Chloride ions from deicing salts break down the protective layer on reinforcing steel leading to various forms of corrosion-induced damage such as cracking and spalling. A significant percentage of highway bridges is suffering from serious premature decay. In extreme circumstances, catastrophic collapse of bridges has occurred. A reliable corrosion assessment of concrete bridges is therefore essential. This article briefly describes shortcomings of commonly used assessment methods, discusses the effect of oxygen and introduces an approach to reach a reliable corrosion assessment.
Publication date
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  • Canadian Civil Engineer 18, no. Spring 2 (1 June 2001): 20–21.
LanguageEnglish
Peer reviewedNo
NRC numberNRCC 44684
NRC-IRC-10218
NPARC number20386510
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Record identifieredb00c97-7959-494a-889e-d00dea4dc206
Record created2012-07-25
Record modified2020-03-27
Date modified: