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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: Reinforced Concrete Beams With Steel Fibers Under Shear
Author(s): E. I. El-Niema
Publication: Structural Journal
Appears on pages(s): 178-183
Keywords: beams (supports); ductility; fiber reinforced concretes; load-deflection curve; loads (forces); load tests; metal fibers; reinforced concrete; shear properties; tensile strength; Structural Research
Abstract:The effect of steel fibers on the behavior and strength of reinforced concrete beams under shear is studied. Nine fiber reinforced beams and one plain reinforced concrete beam were tested by two-point loading. The fiber content ranged from 0.4 to 1 percent, and the aspect ratio of the fibers was between 60 and 120. Improvement of first-crack load and ultimate load over that of plain concrete was noted. The first-crack strength ratio of fibrous and plain beams was a function of fiber spacing. The ultimate strength of fibrous beams under shear was much higher than that of the plain concrete beam, depending on the energy absorbed in debonding and stretching the fibers, which is directly proportional to the fiber volume content and aspect ratio.
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