Evaluation of Cores from I-10 Between Acadian Thruway and College Drive

Details

• Creators:
  Rupnow, Tyson D. ; Collier, Zachary ; Raghavendra, Amar
• Corporate Creators:
  Louisiana Transportation Research Center
• Corporate Contributors:
  Louisiana. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Cores (Specimens)
  • Evaluation
  • Concrete
  • Field tests
  • Testing
  • Pavement
• Publication/ Report Number:
  FHWA/LA.15/15-01TA-C
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Louisiana
• Edition:
  Technical Assistance
• Corporate Publisher:
  Louisiana. Dept. of Transportation and Development
• Abstract:
  This technical assistance report documents the investigation conducted by the Louisiana Transportation Research Center (LTRC) of the cored concrete from Eastbound and Westbound I-10 between Acadian Thruway and College Drive in Baton Rouge, LA. The top 3-4 inches of the cores in highly distressed areas were difficult to obtain. The petrographic analysis showed that there are no signs of alkali carbonate reaction (ACR). Alkali silica reaction (ASR) was present, but not significant enough to cause the distress observed. The petrographic analysis showed that the highly distressed areas contained excessive air content, averaging 17 percent, in the top 3-4 inches of the pavement. This excessive air content leads to a weaker concrete and, when combined with the shrinkage cracking, can lead to spalling of the affected areas. Potential remedies include partial depth patching, full depth patching with a panel replacement or hydroblasting the top 3-4 inches of the section and completing a bonded overlay
• Format:
  PDF
• Funding:
  DOTLT1000064
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/39570/dot_39570_DS1.pdf
• File Type:
  [PDF - 120.95 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:ccdb0dcd7f8a812bb10984af32d76ffd0f32c8a508b3bb7415eecf330cc9f795