Evaluation of deterioration of structural concrete due to chloride intrusion and other damaging mechanisms.

Details

• Creators:
  Howell, Brian ; Hopwood II, Theodore ; Palle, Sudhir
• Corporate Creators:
  University of Kentucky Transportation Center
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Concrete bridges
  • Deterioration
  • Chlorides
  • Reinforcing steel
  • Corrosion
  • Alkali silica reactions
  • Field tests
  • Laboratory tests
  • Inspection
• Publication/ Report Number:
  KTC-14-03/SPR10-406-1F
• Resource Type:
  Tech Report
• Geographical Coverage:
  Kentucky
• Corporate Publisher:
  Kentucky. Transportation Cabinet
• Abstract:
  Kentucky's bridges continue to age and experience distress. The intrusion of chlorides into ; concrete remains the primary mechanism for deterioration. It leads to reinforcing steel corrosion ; that damages the adjoining concrete structure. This study found problematic chloride ; concentrations in Kentucky concrete bridge elements (decks, pier caps, abutments). Chloride ; levels have been found at concentrations sufficient to initiate reinforcing steel corrosion. In some ; cases, chloride concentrations were sufficient to cause accelerated corrosion and produce major ; section loss of reinforcing steel. Advanced stages of corrosion such as these typically require ; costly repairs and maintenance to extend the service life of bridges. ; Field inspections and laboratory analyses conducted during this study verified the ongoing ; problem of concrete deterioration across bridges within Kentucky's transportation network.
• Format:
  PDF
• Funding:
  KYSPR 10-406
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29539/dot_29539_DS1.pdf
• File Type:
  [PDF - 21.28 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:6d8accb7d8bc601ae8075452b508fedc061e8e4b85992b03320d46918cb56f8a