Synthesis of Information Related to Highway Practices. Topic 51-14. Repair and Maintenance of Post-Tensioned Concrete Bridges

The use of post-tensioning permits the construction of economical, long-span bridges.  In recent years, repair and maintenance of post-tensioned bridges have gained importance in light of a few instances of serious tendon degradation[i].  Guidance documents exist for early life stages of these structures: the AASHTO Load and Resistance Factor Design (LRFD) Bridge Design Specifications identify the minimum bridge design requirements, while the(2013) provides guidance on construction practices.  Practices aimed to improve post-tensioned structures’ durability over the long-term are qualitatively discussed in a few guidance documents, such as fib’s Bulletin 33.  However, very limited information is available to guide bridge owners on how to maintain existing structures, or, more specifically, to repair degraded post-tensioned bridges for example cast–in–place box girders, spliced girders, segmental bridges, adjacent box girders, pier caps, etc.  While bridge owners approach issues requiring remediation on a case-by-case basis, identification of current practices and knowledge transfer across states could improve structure integrity and reduce maintenance and repair efforts. The objective of this synthesis is to gather information on the practices used by bridge owners to repair and maintain post-tensioned bridges, both in service and during construction. The goal is to further facilitate knowledge transfer across state DOTs, aiding bridge owners in the identification, repair and maintenance practices that are working. The report should include the following aspects (not an exhaustive list) about repair and maintenance of post- tensioned concrete bridges in-service and during construction: (1) Identification of issues and specific cases where these are highlighted.  (2) Problematic and preferred design details, specifications, and construction practices (grouting, materials, post-tensioning practices, etc.) (3) Repair methodologies for issues due to construction errors, corrosion, damage caused by over-height vehicle impacts, etc.  Including repair and/or replacements of decks on top of post-tensioned bridges.  (4)  Inspection and maintenance documentation (NDT specifically to post-tensioned bridges, special requirements and inspections).  Information will be gathered by literature review including domestic and international sources which identifies the most relevant examples, techniques and conditions under which consistent results are achieved. Surveys and/or interviews of the state DOTs and selected contractors, and a minimum of five case examples shall be included. Case examples should focus on corrective actions and should consider:   (1)  Owner’s existing policies, specifications; (2)  Recent remediation actions and after-action feedback from the owner’s perspective; (3)  Guidance documents, as they exist.

Language

  • English

Project

  • Status: Active
  • Funding: $45000
  • Contract Numbers:

    Project 20-05, Topic 51-14

  • Sponsor Organizations:

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Garcia-Colberg, Mariella

  • Performing Organizations:

    Ohio State University, Columbus

    410 West Tenth Avenue
    Columbus, OH  United States  43210
  • Principal Investigators:

    Brenkus, Natassia

  • Start Date: 20191108
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01704618
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-05, Topic 51-14
  • Files: TRB, RiP
  • Created Date: May 13 2019 3:09PM