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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: Dynamic Strength Properties of Concrete and Reinforcing Steel Subject to Extreme Loads
Author(s): Seongwon Hong and Thomas H.-K. Kang
Publication: Structural Journal
Appears on pages(s): 983-995
Keywords: dynamic increase factor; dynamic strength properties; reinforcing steel
Abstract:Understanding dynamic strength properties of concrete and reinforcing steel subject to blast, shock, or impact loads is required for numerical analysis and design of civilian and military structures. Generally, methods of the drop-weight impact test, split Hopkinson pressure bar test, and plate impact test have been used to determine material response at high strain rate, while a servohydraulic testing machine is used to evaluate a static or quasi-static strain. Several organizations and researchers developed and proposed as a metric the dynamic increase factor (DIF) versus strain rate curves and/or DIF formulations through experimental results, where the DIF is defined as the ratio of the dynamic stress to the static stress and is normally expressed as a function of strain rate. In this paper, DIF formulations are also proposed using the Unified Facilities Criteria (UFC) nonlinear DIF curve and based on the most recent database, which is needed for numerical analysis. Based on extensive literature reviews, this paper: 1) presents the definition of strain rate domains; 2) summarizes the features and limitations of experimental methods; and 3) systematically reviews the design curves and prediction models for concrete and reinforcing steel, along with the existing data.
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