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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: Flexural Behavior of Confined High-Strength
Author(s): Teng-Hooi Tan and Ngoc-Ba Nguyen
Publication: Structural Journal
Appears on pages(s): 198-205
Keywords: high-strength concrete; stress; test
Abstract:An experimental investigation of 30 plain and reinforced concrete column specimens with 200 mm square sections is presented. The specimens were tested under different loading schemes: concentric compression, eccentric compression with a fixed neutral axis position, and eccentric compression with a constant eccentricity. The main variables are concrete strength, ranging from 46 to 101 MPa, and confinement reinforcement with a volumetric ratio ranging from 0.7 to 2.4%. A new equivalent rectangular stress block needing only one parameter is proposed. A large volume of published test data with a wide range of concrete strengths was used to examine this rectangular stress block and that of the ACI code. The result shows that this new equivalent rectangular stress block is suitable for both normal- and high-strength concrete.
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