SELECTING APPROPRIATE REMEDIAL MEASURES FOR CORRODING CONCRETE STRUCTURES

Reinforcement corrosion is the most common cause of deterioration of concrete structures. It is caused by carbonation and by sodium chloride in de-icing salt and sea water. In most cases it is important to stop the corrosion process and repair any damage to the concrete that has resulted. If corrosion is not stopped it could affect the safety of the structure by reducing bond strength and the cross-section of the reinforcement. The safety of users could also be affected by lumps of concrete falling off the structure. There are a number of methods for preventing/stopping corrosion in concrete structures and it is often diffcult for the engineer to select the best method in particular circumstances. This paper reviews the following remedial measures: (1) silane; (2) paint; (3) inhibitors; (4) cathodic protection; (5) desalination; (6) realkalisation; (7) concrete repairs; (8) enclosures for catching debris and; (9) strengthening using fibre composite materials. Each remedial measure is discussed in terms of: (1) the condition of the structure; (2) the amount of pre and post treatment monitoring that is needed; (3) relative costs and benefits; and (4) its practical applicability and the degree to which it may affect the users of the structure. The discussion leads to some guidelines on when the use of different remedial measures appropriate and the life and relative costs of different remedial measures. For the covering abstract see ITRD E106406.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0727728547
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • VASSIE, P R
  • ARYA, C
• Conference:
  • BRIDGE MANAGEMENT 4 - INSPECTION, MAINTENANCE, ASSESSMENT AND REPAIR
• Publication Date: 2000

Language

• English

Media Info

• Features: References;
• Pagination: p. 524-35

Subject/Index Terms

• TRT Terms: Corrosion; Evaluation and assessment; Prevention; Reinforced concrete; Repairing
• ITRD Terms: 5252: Corrosion; 9020: Evaluation (assessment); 9149: Prevention; 4794: Reinforced concrete; 3635: Repair
• Subject Areas: Maintenance and Preservation; Planning and Forecasting; Security and Emergencies;

Filing Info

• Accession Number: 00801580
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-7277-2854-7
• Files: ITRD
• Created Date: Nov 8 2000 12:00AM