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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: Strength Of Grade 60 Reinforcing Bars After Exposure to Fire Temperatures
Author(s): William T. Edwards, William L. Gamble
Publication: Concrete International
Appears on pages(s): 17-19
Abstract:A number of #4 Grade 60 reinforcing bars were heated to temperatures of 932 to 1475 F (500 to 802 C) and then slowly cooled in a furnanace, simulating one possible exposure condition in a severe fire. The bars were tested in tension after they had cooled. The yield stresses were reduced to a minimum of 73 percent of the original strength, and the ultimate strenghts were reduced to a minimum of 83 percent of the as-rolled strength. Data shuch as this is needed by the engineer faced with the evaluation of a structure which has been damaged bya sever fire, and the currently available information is incomplete and sometimes contradictory.
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