Research for AASHTO Standing Committee on Highways. Task 216. Application of LRFD Bridge Design Specifications to High-Strength Structural Concrete: Final Project - Phase I

Section 4, Concrete Structures, of the AASHTO LRFD Bridge Design Specifications, Third Edition permits the use of design concrete strengths above 10.0 ksi when allowed by specific articles. This provision was introduced to allow the results of ongoing research projects to be introduced into the specifications when the research is completed. The eventual goal is to extend all articles of Section 5 to a design concrete strength of 15.0 ksi or higher. To date, revisions based on the FHWA project entitled "Compilation and Evaluation of Results from High Performance Concrete Bridge Projects" and NCHRP Project 18-07 on prestress losses have been approved by AASHTO. Ongoing NCHRP projects that will result in additional proposed revisions are 12-56 on shear, 12-60 on bond and development length, and 12-64 on flexure and compression. When these projects are complete and the results incorporated into the specifications, the major articles in Section 5 will be applicable to concrete compressive strengths of 15 ksi or higher. The next step is to identify the additional research needed so that the whole of Section 5 can be made applicable to design concrete strengths up to 15 ksi or higher. After that, a research program can be formulated to address the necessary topics including those not addressed in the ongoing NCHRP projects.<br /><br />

Language

  • English

Project

  • Status: Completed
  • Funding: $33560.00
  • Contract Numbers:

    Project 20-07, Task

  • Sponsor Organizations:

    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

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Beal, David

  • Performing Organizations:

    Henry G. Russell, Incorporated

    ,    
  • Start Date: 20060224
  • Expected Completion Date: 0
  • Actual Completion Date: 20070831
  • Source Data: RiP Project 15612

Subject/Index Terms

Filing Info

  • Accession Number: 01464730
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 20-07, Task
  • Files: TRB, RiP, USDOT
  • Created Date: Jan 3 2013 2:48PM