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Transfer and development length of prestressing tendons in full-scale AASHTO prestressed concrete girders using self-consolidating concrete.
  • Published Date:
    2009-03-01
  • Language:
    English
Filetype[PDF-981.57 KB]


Details:
  • Publication/ Report Number:
    FHWA-ICT-09-038 ; ICT-09-038, UILU-ENG-2009-2009 ;
  • Resource Type:
  • Geographical Coverage:
  • ISSN:
    0197-9191
  • NTL Classification:
    NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and StructuresNTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Materials ;
  • Format:
  • 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.

  • Funding:
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