131-584 Bending and Straightening of Grade 60 Reinforcing Bars

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: 131-584 Bending and Straightening of Grade 60 Reinforcing Bars

Author(s): J. P. Stecich, John M. Hanson and Paul F. Rice

Publication: Concrete International

Volume: 6

Issue: 8

Appears on pages(s): 14-23

Keywords: bending (reinforcing steels); bend tests; heating; reinforcing steels; research; temperature; ten-sile properties; yield point.

Date: 8/1/1984

Abstract:
Bending and straightening tests were conducted on Grade 60 reinforcing bars. Three sizes of billet steel bars were included in the tests; #5, #8, and # 11. The bars were obtained from three sources, one source supplying all three sizes and two only the # 11 bars. Tests were done at cold and room termperatures. Bars were bent to the minimum diameter specified in the American Concrete Institute’s Building Code Requirements for Reinforced Concrete (ACI 318-83) and to as small a diameter as possible. Bending was done around the weak and strong axis. Some bars were flame heated to approximately 1500 F (820 C) to reduce breakage. Tensile tests were conducted on straightened bars to compare with tensile tests of unbent con trol bars.