Aggregate distribution investigation in box beams fabricated with self consolidating concrete.

Details

• Alternative Title:
  Continuing research on allowable design release stresses for prestressed concrete beams
• Creators:
  Avendaño, Alejandro ; Bayrak, Oguzhan
• Corporate Creators:
  University of Texas at Austin. Center for Transportation Research
• Corporate Contributors:
  Texas. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Box girder bridges
  • Box beams
  • Prestressed concrete
  • Prestressed concrete bridges
  • Box girder bridges--Testing
  • Prestressed concrete beams--Testing
  • Box beams--Testing
  • Concrete beams--Testing
• Publication/ Report Number:
  FHWA/TX-10/0-5197-01-1 ; 0-5197-01-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report.
• Corporate Publisher:
  University of Texas at Austin. Center for Transportation Research
• Abstract:
  In 2004, the Texas Department of Transportation initiated Project 0-5197 to investigate the feasibility of ; increasing the allowable compressive stress limit at prestress transfer. Initially, the live load performance of 36 ; specimens was evaluated by Birrcher and Bayrak (TxDOT Report 5197-1, 2007). Report 5197-4 presents the ; subsequent research conducted based on recommendations of Birrcher and Bayrak (2007). In this portion of ; TxDOT Project 0-5197, 45 Type-C beams and 10 4B28 box beams were tested to experimentally determine ; their cracking load. The Type-C beams were produced in four different fabrication plants using conventionally ; consolidated concrete. The 10 4B28 box beams were produced in two fabrication plants using concrete mixture ; designs of both self consolidating concrete as well as conventional concrete (Schnittker and Bayrak, CTR, ; 2008). After testing the 10 box beams procured in TxDOT Project 0-5197, Schnittker and Bayrak (2008) ; reported increased amounts of top flange cracking at release, substantially lower modulus of elasticity (along ; with increased deflections under live loading), slightly higher cambers near 28-days, and lower than expected ; flexural cracking loads under live loads. The present investigation is carried out in an effort to explain the poor ; performance of the beams fabricated with SCC as reported in research report 0-5197-4.
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• Format:
  PDF
• Funding:
  0-5197-01
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17940/dot_17940_DS1.pdf
• File Type:
  [PDF - 24.59 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:bb2d6bc9997e57e79b1d76c62c639d5157e42abaf7315c024435aec7b8d32bd9