Evaluation of the Short and Long-term Efficiencies of Electro-chemical Chloride Extraction
The short and long-term effects of electro-chemical chloride extraction (ECE) treatment on corrosion rate of corroded reinforcement have been studied. The factors controlling ECE treatment were identified, and the alterations which occurred in the chloride profile of the cover zone due to ECE process were followed. Contaminated reinforced OPC and SRC mortar specimens made with 1 or 2% NaCl, by mass of cement, were prepared, cured, and then subjected to 3 or 5% NaCl for 1 year. These specimens were finally treated with ECE using various impressed current densities (1 and 2 A/m²) and electrolytes (water and calcium hydroxide) for 2, 4, and 8 weeks. The state of corrosion was monitored regularly every 2 weeks from halting ECE process up to 52 weeks using zero-resistance ammeter device for measuring the corrosion current density of reinforcement. Selected samples from the cover zone of the untreated and treated specimens were finally taken to assess their chloride profiles.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
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Supplemental Notes:
- Abstract reprinted with permission from Elsevier
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Authors:
- Abdelaziz, G E
- Abdelalim, A M K
- Fawzy, Y A
- Publication Date: 2009-8
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 727-732
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Serial:
- Cement and Concrete Research
- Volume: 39
- Issue Number: 8
- Publisher: Elsevier
- ISSN: 0008-8846
- Serial URL: http://www.sciencedirect.com/science/journal/00088846
Subject/Index Terms
- TRT Terms: Corrosion; Durability; Electrochemical processes; Material reinforcement; Rehabilitation; Reinforced concrete; Structural deterioration and defects
- Uncontrolled Terms: Chloride extraction
- Subject Areas: Highways; Materials; I35: Miscellaneous Materials;
Filing Info
- Accession Number: 01142297
- Record Type: Publication
- Files: TRIS
- Created Date: Oct 21 2009 8:29AM