DETECTING CORROSION-INDUCED DELAMINATIONS

This paper provides an appraisal of the available methods for detecting and quantifying corrosion-induced delaminations in steel reinforced concrete. The traditional chain-drag method, which involves dragging a chain on the concrete surface and listening to its acoustic response, is the most commonly used technique. An automated chain-drag system has also been developed that is equipped with a computerized marking system that can store data for future analysis. Other techniques include an electro-mechanical sounding system, rotary-percussion sounding system, impact-echo method, infrared thermography and ground-penetrating radar. The Federal Highway Administration is sponsoring the development of two electromagnetic systems. When choosing a suitable technique for a specific application, technicians should consider simplicity, efficiency and economy. Minimizing inconvenience to the users of the structure during the inspection process is also an important consideration.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/4163061
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Khan, M S
• Publication Date: 2003-7

Language

• English

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 73-78
• Serial:
  • Concrete International
  • Volume: 25
  • Issue Number: 7
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0162-4075

Subject/Index Terms

• TRT Terms: Acoustic equipment; Automation; Condition surveys; Corrosion; Delamination; Electromagnetic devices; Flaw detection; Ground penetrating radar; Infrared imagery; Inspection equipment; Reinforced concrete; Reinforcing steel; Sounding; Technological innovations; Thermographs
• Identifier Terms: U.S. Federal Highway Administration
• Subject Areas: Highways; Maintenance and Preservation; Materials; Vehicles and Equipment; I32: Concrete; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00960752
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 7 2003 12:00AM