ASR/DEF-damaged bent caps : shear tests and field implications.

Details

• Creators:
  Deschenes, Dean J. ; Bayrak, Oguzhan ; Folliard, Kevin J.
• Corporate Creators:
  University of Texas. Ferguson Structural Engineering Laboratory
• Corporate Contributors:
  Texas. Dept. of Transportation
• Subject/TRT Terms:
  • Bents
  • Reinforced concrete
  • Pavement cracking
  • Spalling
  • Deterioration
• Publication/ Report Number:
  12-8XXIA006
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Corporate Publisher:
  University of Texas
• Abstract:
  Over the last decade, a number of reinforced concrete bent caps within Houston, Texas have exhibited premature concrete damage (cracking, spalling and a loss of material ; strength) due to alkali-silica reaction (ASR) and/or delayed ettringite formation (DEF). ; The alarming nature of the severe surface cracking prompted the Houston District of the Texas Department of Transportation to initiate an investigation into the structural implications of the premature concrete damage. Specifically, an interagency contract with ; the University of Texas at Austin charged engineers at Ferguson Structural Engineering Laboratory to: 1. Establish the time-dependent relationship between ASR/DEF deterioration and the shear capacity of affected bridge bent caps. 2. Develop practical recommendations for structural evaluation of in-service bridge bent caps affected by ASR and/or DEF.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17244/dot_17244_DS1.pdf
• File Type:
  [PDF - 10.51 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:8d5a927d897ec7b98f4e24dd3de9d3a071b8ac46da52fe7fa192d4ac4ee0585d4d9b14f8558786eb38ccb5d94bbf1ebf4d9f21919bf702b72396d6676cfc0825