Performance of self-consolidating concrete in prestressed girders.

Details

• Creators:
  Bhoem, Kurtis M. ; Barnes, Robert W. ; Schindler, Anton K.
• Corporate Creators:
  Auburn University. Highway Research Center
• Corporate Contributors:
  Alabama. Department of Transportation
• Subject/TRT Terms:
  • Self compacting concrete
  • Prestressed concrete
  • Prestressed concrete bridges
  • Length
  • Flexural strength
  • Self-consolidating concrete
  • Prestressed girders
  • Transfer length
  • Development length
  • Flextural strength
• Publication/ Report Number:
  FHWA/ALDOT 930-602
• Resource Type:
  Tech Report
• Geographical Coverage:
  Alabama
• Edition:
  Technical report.
• Corporate Publisher:
  Auburn University. Highway Research Center
• Abstract:
  A structural investigation of self-consolidating concrete (SCC) in AASHTO Type I precast, ; prestressed girders was performed. Six test girders were subjected to transfer length and ; flexural testing. Three separate concrete mixtures, two girders per mixture, were used to ; construct these specimens. A moderate-strength, conventional-slump concrete mixture, similar ; to the concrete used in typical ALDOT girders was evaluated versus moderate-strength SCC ; and high-strength SCC. No significant difference in transfer bond behavior was found between ; the full-scale SCC girders and the conventional concrete girders. High-strength SCC girders ; had shorter transfer lengths than moderate-strength (SCC and conventional) girders. After ; normalization to account for the difference in prestress magnitude and concrete strength, there ; was no discernible difference in the magnitude of the transfer lengths between the concrete ; types. After a composite, cast-in-place concrete deck was added to each girder, flexural ; testing was performed near each girder end, resulting in two flexural tests per girder. ; Embedment lengths were varied for each test in order to bracket the AASHTO strand ; development length. Results indicated that the use of SCC had no adverse effects on the ; overall flexural performance, and the flexural bond lengths were conservatively predicted by ; the relevant ACI and AASHTO expressions. Similarly, the SCC girders exhibited comparable ; service-level performance to the conventional girders. Based on the work performed in this ; study SCC should perform well in prestressed concrete girder applications.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/20356/dot_20356_DS1.pdf
• File Type:
  [PDF - 4.05 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:601f3fec344e28572d038b9eca6c92a95f172a96f7be4c06a481b4e09302a857ea80d2f58453f77a91f6d45abe58b627cc51f25ae31eae435f91333aa41a21d2