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:
  Development Length Flextural Strength Flexural Strength Length Prestressed Concrete Prestressed Concrete Bridges Prestressed Girders Self-consolidating Concrete Self Compacting Concrete Transfer Length
• 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.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:601f3fec344e28572d038b9eca6c92a95f172a96f7be4c06a481b4e09302a857ea80d2f58453f77a91f6d45abe58b627cc51f25ae31eae435f91333aa41a21d2
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/20356/dot_20356_DS1.pdf
• File Type:
  [PDF - 4.05 MB ]