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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: Long-time Behavior of Reinforced Concrete
Beams Subjected to Pure Torsion
Author(s): Inge Karlsson, Lennart Elfgren, and Anderson Losburg
Publication: Journal Proceedings
Appears on pages(s): 280-283
Keywords: beams (supports); creep properties; loads
(forces); long-time study; rectangular beams; reinforced
concrete; research; stiffness; strains; torsion.
Abstract:Results from a theoretical and experimental investigation on cracked reinforced concrete members subjected to a long-time torsional load are presented. The theoretical relationships are obtained from a truss model. An expression for the torsional stiffness in the elastic stage is modified to take into account the effect of creep of the concrete. The experimental work comprised tests on eight rectangular beams with different amounts of reinforcement and subjected to different load levels. The long-time tests were run for a year then ultimate tests were performed. [Authors]
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