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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: Torsional Behavior of High-Strength Concrete Beams with Lower Amounts of Torsional Reinforcement
Author(s): I.-K. Fuang and H.-J. Chiu
Publication: Special Publication
Appears on pages(s): 741-768
Keywords: beams; high-strength concrete; reinforced concrete; shear;structure design; torsion
Abstract:Experimental investigation was conducted to study the pure torsional behavior of sixteen high- (HSC) and normal-strength concrete (NSC) full-size beams with relatively low amounts of torsional reinforcement. The test specimens had variable levels of transverse and longitudinal reinforcements, compressive strength of concrete and aspect ratio of the cross section. The overall behavior, with emphasis on the post-cracking reserve strength, is reported. It was found that the adequacy of post-cracking reserve strength for specimens with the minimum amount of torsional reinforcement specified in the ACI 318-02 is primarily related to the ratio of ?t /?l . Nevertheless, the lower limit of ?total = 1 % should not be ignored. A simple approach to determine the minimum amount of torsional reinforcement is discussed and confirmed by the test results to facilitate the design of torsion for HSC and NSC beams.
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