Transfer and development length of prestressing tendons in full-scale AASHTO prestressed concrete girders using self-consolidating concrete.

Details

• Creators:
  Andrawes, Bassem ; Shin, Moochul ; Pozolo, Andrew
• Corporate Creators:
  Illinois Center for Transportation
• Corporate Contributors:
  Illinois. Department of Transportation. Bureau of Materials and Physical Research
• Subject/TRT Terms:
  • High strength concrete
  • Lightweight concrete
  • Concrete bridges
  • Tendons (Materials) High strength concrete
  • Lightweight concrete
  • Prestressed concrete beams
  • Concrete bridges
  • Tendons (Prestressed concrete)
• Publication/ Report Number:
  FHWA-ICT-09-038;ICT-09-038, UILU-ENG-2009-2009
• Resource Type:
  Tech Report
• Geographical Coverage:
  Illinois
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  Self-consolidating concrete (SCC) is a highly workable concrete that flows through densely reinforced or ; complex structural elements under its own weight. The benefits of using SCC include: a) Reducing labor costs ; by eliminating the need for mechanical vibration, b) Improving constructability, c) Providing a virtually flawless ; finish, d) Providing uniform and homogenous concrete, and e) Easily filling a complex shape formwork. Even ; though SCC is comparable to conventional concrete in terms of strength, the comparability of its bond to steel is ; less well-defined. This disparity of knowledge becomes more critical when using SCC in prestressed members ; due to the impact that bond strength has on the transfer and development lengths of prestressing tendons. ; The increasing interest among Illinois precasters in using SCC in bridge girders has motivated the Illinois ; Department of Transportation (IDOT) and the Illinois Center for Transportation (ICT) to sponsor this synthesis ; study, which reviews and combines information from literature discussing the impact of using SCC on the ; transfer and development lengths of prestressing tendons in AASHTO bridge girders. The primary objectives of ; this study include: (1) Utilizing the results of previous research to evaluate the effect of using SCC on the ; transfer and development lengths of prestressing tendons and evaluate how SCC compares with conventional ; concrete, (2) Investigating the feasibility of using SCC in AASHTO bridge girders without the need for changing ; current design provisions recommended by the ACI and AASHTO, and (3) Providing IDOT with ; recommendations regarding the application of SCC in prestressed bridge girders.
  More +
• Format:
  PDF
• Funding:
  ICT R27-36
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16714/dot_16714_DS1.pdf
• File Type:
  [PDF - 981.57 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:c44dbfbb1230c27a853b0cf6506d9051f276e11140d3f9856a2e8f1d6941e7067f1d59d23a453324717d4e644d0cc8426225e32a16ab82d4b7527ef1aabd9d43