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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > 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.
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
Appears on pages(s): 14-23
Keywords: bending (reinforcing steels); bend tests;
heating; reinforcing steels; research; temperature; ten-sile
properties; yield point.
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.
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