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FOURTH NATIONAL WORKSHOP ON BRIDGE RESEARCH IN PROGRESS:
 
RESEARCH ABSTRACT
 
Title:
High Performance Steels for Highway Bridges
Author(s) and Affiliation(s):
William Wright Turner-Fairbank Highway Research Center Federal Highway Administration, McLean, VA
Principal Investigator:
Various
Sponsor(s):
Federal Highway Administration, Naval Surface Warfare Center, and American Iron and Steel Institute
Research Start Date:
1992
Expected Completion Date:
1998
Research Objectives:
The objectives of these studies are (1) to develop new high performance steel grades 70W and 100W that are optimized for highway bridge construction. The primary focus is on improved weldability and toughness compared to existing steels of this strength. The approach is to greatly reduce the carbon content of the alloy and use advanced processing and micro-alloy additions to keep the required strength; (2) to produce full size plates of the new HPS grades and perform extensive laboratory testing to verify quality and performance in structural members. This will include both material property tests and full scale tests on welded plate girder members; and (3) to introduce these new steels into the market by fabricating a series of experimental demonstration bridge projects in partnership with State bridge owners.
Expected Products or Deliverables:
The development of new steel grades with appropriate specifications for adoption into the AASHTO M-270 specification.

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