This Innovations Deserving Exploratory Analysis (IDEA) project investigated rebars of three alloys for resistance to chloride ions at two pH levels. The alloys were aluminum bronze, ductile iron, and mild steel. Samples of mild steel rebar were selected from commercial sources. Rebars of aluminum bronze and ductile iron had to be produced by a custom-made process. Aluminum bronze rebar showed excellent corrosion resistance. Both ductile iron and steel had poor corrosion resistance, with ductile iron being somewhat better than mild steel. The mechanical properties of the custom-made aluminum bronze rebar tested lower than the steel rebar. It was demonstrated that an inexpensive cold working process called drawing could increase the mechanical properties of the aluminum bronze alloy. An 18% reduction in area by cold drawing was sufficient to raise the yield strength of aluminum bronze rebar to meet ASTM specifications for steel rebar.

  • Record URL:
  • Supplemental Notes:
    • This NCHRP-IDEA investigation was conducted by Man-Tech Development, Inc., Mansfield, Texas. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
  • Corporate Authors:

    Transportation Research Board

    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Authors:
    • Stein, D
    • Lu, F
    • Iglecia, A
  • Publication Date: 1996-12


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00734669
  • Record Type: Publication
  • Report/Paper Numbers: NCHRP-IDEA Project 019
  • Contract Numbers: NCHRP-94-ID019
  • Files: TRIS, TRB
  • Created Date: Mar 26 2001 12:00AM