REPORT OF PROJECT COMMITTEE ON THE USE OF HIGH ELASTIC LIMIT STEEL AS REINFORCEMENT FOR CONCRETE

THE LOWER DUCTILITY OF HIGH ELASTIC LIMIT STEEL BARS DOES NOT CONSTITUTE A VALID OBJECTION TO THEIR USE. BARS ROLLED FROM STEEL RAILWAY RAILS EXHIBIT SATISFACTORY UNIFORMITY. AS LONGITUDIANL REINFORCEMENT IN COLUMNS THIS GRADE OF STEEL SUPPLIES ADDITIONAL STRENGTH. FATIGUE AND IMPACT LOADING AND VOLUMETRIC CHANGE IN CONCRETE DO NOT PRESENT ANY SPECIAL PROBLEM. AMONG THE FACTORS NEEDING RESEARCH ARE: WELDING, BOND STRENGTH, DEFLECTION OF FLEXURAL MEMBERS, EFFECTS OF TENSILE CRACKS, IDENTIFICATION OF GRADES AND SEVER IMPACT. AT THE SAME WORKING STRESSES HIGH ELASTIC LIMIT STEEL CAN BE SAFELY AND SATISFACTORILY USED INTERCHANGEABLE WITH SOFTER MATERIAL BUT IF ECONOMY IS TO BE ACHIEVED ADVANTAGE MUST BE TAKEN OF THE HIGHER POSSIBLE WORKING STRESSES FOR BOTH STEEL AND CONCRETE. RESEARCH IS NEEDED TO CLEAR UP QUESTIONS BEARING UPON THEIS POINT. THE REPORT ANALIZES THE POSSIBLILITES OF SAVING THROUGH THE USE OF HIGHER WORKING STRESSES AND ALTERATIONS IN DESIGN PROCEDURE AND APPLIES THEM TO THE REDESIGN OF A DECK GIRDER HIGHWAY BRIDGE. A CONSIDERABLE SAVING IN MATERIAL IS SHOWN TO BE POSSIBLE. /AUTHOR/

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/14/14P1-013.pdf
• Supplemental Notes:
  • Vol 14, PART I, PP 255-314, 8 FIG, 17 TAB, 58 REF. 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.
• Authors:
  • Gilkey, H J
  • Ernst, G C
  • Bradbury, R D
  • Pope, C S
• Discussers:
  • Friberg, B
• Publication Date: 1935

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Fourteenth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 6-7, 1934. Part I
• Serial:
  • Highway Research Board Proceedings
  • Volume: 14
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Bridges; Ductility; Elastic limit; Reinforced concrete; Reinforcing steel; Strength of materials; Stresses
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00217005
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 15 1971 12:00AM