Reinforcement corrosion in concrete structures, its monitoring and service life prediction - A review

Shamsad Ahmad*

*Corresponding author for this work

Research output: Contribution to journalShort surveypeer-review

818 Scopus citations

Abstract

Reinforcement corrosion has been widely reported in the literature over the last two to three decades. It is one of the major durability problems, mainly when the rebar in the concrete is exposed to the chlorides either contributed from the concrete ingredients or penetrated from the surrounding chloride-bearing environment. Carbonation of concrete or penetration of acidic gases into the concrete, are the other causes of reinforcement corrosion. Besides these there are few more factors, some related to the concrete quality, such as w/c ratio, cement content, impurities in the concrete ingredients, presence of surface cracks, etc. and others related to the external environment, such as moisture, oxygen, humidity, temperature, bacterial attack, stray currents, etc., which affect reinforcement corrosion. The assessment of the causes and extent of corrosion is carried out using various electrochemical techniques. Prediction of the remaining service life of a corroding RC structure is done with the help of empirical models and experimental methods. In this paper a review is presented on the mechanism of reinforcement corrosion, techniques utilized to monitor reinforcement corrosion and methodologies that are utilized for the prediction of remaining service life of structures.

Original languageEnglish
Pages (from-to)459-471
Number of pages13
JournalCement and Concrete Composites
Volume25
Issue number4-5 SPEC
DOIs
StatePublished - 2003

Keywords

  • Mechanisms
  • Monitoring
  • Reinforcement corrosion
  • Service life prediction

ASJC Scopus subject areas

  • Building and Construction
  • General Materials Science

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