APPLICATION OF INFRARED THERMOGRAPHY TECHNIQUE FOR EVALUATION OF CRACKS IN THE CONCRETE STRUCTURES

In this paper, a method to evaluation the crack size of concrete structures by infrared thermography was investigated. This method is based on the relation between the crack depth or width and thermal distribution in concrete. First, the influence of crack depth and width on thermal distribution was examined. Next, the influence of the distance between cracks and heater on thermal distribution was investigated. The effectiveness of this method was confirmed by the results of the experiment on flexural cracks in reinforced concrete beams. From these results, it was demonstrated that the thermal distribution measured at the surface of concrete by infrared thermography was effective in evaluating the crack size in concrete structures.

• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Nagataki, S
  • Kamada, T
  • Matsumoto, A
• Conference:
  • Recent Advances in Concrete Technology
  • Location: Tokushima, Japan
  • Date: 1998-6-7 to 1998-6-11
• Publication Date: 1998

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 517-537

Subject/Index Terms

• TRT Terms: Beams; Concrete structures; Cracking; Infrared radiation; Measures of effectiveness; Reinforced concrete; Size; Thermographs; Width
• Uncontrolled Terms: Effectiveness; Reinforced concrete beams
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 00753845
• Record Type: Publication
• Report/Paper Numbers: SP 179-32
• Files: TRIS
• Created Date: Sep 15 1998 12:00AM