Evaluation of Corrosion Resistance of Improved Post-Tensioning Materials After Long-Term Exposure Testing

Details

• Alternative Title:
  Project Title: Corrosion Resistance of Grouted Post-Tensioning Systems
• Creators:
  Kalina, Ryan D. ; Ahern, Michael E. ; Breen, John E. ; Wood, S. L.
• Corporate Creators:
  University of Texas at Austin. Center for Transportation Research
• Corporate Publisher:
  Texas. Dept. of Transportation. Research and Technology Implementation Office
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Accelerated tests
  • Anchorages
  • Beams
  • Chlorides
  • Ducts
  • Encapsulation
  • Plastics
  • Bridges and other structures
  • Highways
  • Maintenance and Preservation
  More +
• Publication/ Report Number:
  FHWA/TX-11/0-4562-4 ; Report 0-4562-4
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• TRIS Online Accession Number:
  01374500
• Edition:
  Technical Report September 2010 - September 2011
• Description:
  Ten full-scale post-tensioned beam specimens were subject to 4 years of aggressive cyclic ponded saltwater exposure. Three of those specimens were additionally exposed to saltwater spray once per month on one anchorage face. Non-destructive monitoring was conducted during the exposure period. This consisted of half-cell potential measurements, AC impedance measurements (for specimens with fully encapsulated tendons), and regular visual inspections. Chloride samples were extracted from the specimens at the end of exposure. After 4 years, the specimens were autopsied, and all reinforcing elements from the middle of each specimen were examined for corrosion and damage. Anchorage regions were also autopsied and examined for corrosion. Duct systems included galvanized metal ducts, plastic ducts, and encapsulated duct systems. Strand types included conventional strand, hot dipped galvanized strand, copper clad strand, and stainless steel strand. Complete observations are presented.
• Format:
  PDF
• Funding:
  0-4562
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/37875/dot_37875_DS1.pdf
• File Type:
  [PDF - 9.67 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:497d22ae273aa5c35e1af76073c4168c3a84e0ea30d0a27d3a54fd604883c3e5