Impedance-based detection of corrosion in post-tensioned cables : phase 2 extension of sensor development : [summary].

Details

• Creators:
  Orazem, Mark
• Corporate Creators:
  University of Florida
• Subject/TRT Terms:
  Bridge Cables Bridges Corrosion Posttensioning Sensors Spectroscopy Tendons (Materials)
• Publication/ Report Number:
  BDV31-977-19
• Resource Type:
  Brief
• Geographical Coverage:
  Florida
• Corporate Publisher:
  Florida. Dept. of Transportation
• Abstract:
  In post-tensioning construction, steel cables
  
  running through PVC pipes buried in concrete
  
  construction components are subjected to a high
  
  level of tension and then secured. This gives the
  
  component significant strength, allowing bridge
  
  spans to be longer, reducing the number of
  
  vertical supports, and saving construction dollars.
  
  Post-tensioning has been used in many significant
  
  bridges in Florida, including the Sunshine Skyway
  
  Bridge. In several of these bridges, inspections
  
  have revealed corrosion of post-tensioning cables,
  
  which could compromise the structure, but
  
  because of the placement of the cables, corrosion
  
  can be difficult to detect. Studies of this problem
  
  concluded that a nondestructive technique to test
  
  for corrosion and corrosion risk in post-tensioned
  
  bridge components was needed.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:29d4b37e1129bd569593f89bb50472b252b576622d3c7f5216885fb766360c96
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28122/dot_28122_DS1.pdf
• File Type:
  [PDF - 647.29 KB ]