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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: Low-Cycle Fatigue Performance of High-Strength Steel Reinforcing Bars
Author(s): Wassim M. Ghannoum and Chase M. Slavin
Publication: Materials Journal
Appears on pages(s): 803-814
Keywords: fatigue; high-strength; low-cycle; reinforcement; steel
Abstract:New high-strength reinforcing steel bars (HSRB) are under development in the United States, driven by constructibility and economic and environmental incentives. An experimental study was undertaken to compare the low-cycle fatigue behavior of the HSRB with that of benchmark Grade 60 (420 MPa) bars. HSRB obtained from two mills using the main two production methods in the United States were tested. Other variables treated in this study were bar strength, bar size, loading protocol, and bar unsupported length. The study indicated significant departures between the fatigue life of high-strength and regular-strength bars and uncovered correlations between the fatigue life of bars and various bar parameters, including deformation geometry and chemical composition. The correlations suggest that simple adjustments to manufacturing processes may lead to significant improvements in fatigue life of HSRB. The study results also provide important data for developing material specifications for a seismic grade of HSRB.
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