Anaerobic Corrosion of Reinforcement

Abstract:

Anaerobic corrosion of steel reinforcement is rarely reported and limited literature is available on the subject. Corrosion of steel is an electrochemical process requiring a supply of oxygen in the presence of moisture. Steel corrosion product usually occupies a much larger volume than the un-corroded steel resulting in cracked or spalled concrete. If the supply of oxygen is restricted, black rust may be formed by the process of anaerobic corrosion. Black rust is not expansive, which makes it particularly difficult to detect in reinforced concrete. This paper presents a case study of anaerobic corrosion in the Mizen Bridge, together with an in-depth review of anaerobic corrosion of reinforcement in concrete, outlining black rust formation, characteristics and detection methods.

• Periodical: Key Engineering Materials (Volumes 569-570)
• Pages: 1124-1131
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.569-570.1124
• Online since: July 2013
• Authors: Ross O’Donovan, Brian D. O’Rourke, Kieran D. Ruane, John Justin Murphy
• Keywords: Anaerobic Corrosion, Black Rust, Reinforced Concrete Deterioration

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