Journal
CORROSION SCIENCE
Volume 69, Issue -, Pages 123-129Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2012.11.032
Keywords
Concrete; Steel reinforced concrete
Funding
- AECOM
- EPSRC (through the Centre for Innovative and Collaborative Engineering at Loughborough University)
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The incipient anode (or halo) effect often occurs on repaired reinforced concrete structures. The diagnosis of this problem is widely reported to be macrocell activity. This diagnosis is based on very limited data. Indeed potential measurements on field structures repaired with proprietary materials have provided data that suggest that macrocell activity is not a cause of incipient anode formation. Alternative mechanisms that may cause incipient anode activity include repair/parent material interface effects, residual chloride contamination within the parent concrete, and/or vibration damage to the steel/parent concrete interface during repair area preparation. (C) 2012 Elsevier Ltd. All rights reserved.
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