Title:
The Effectiveness of Steel Fibers as Shear Reinforcement
Author(s):
R. N. Swamy, H. M. Bahia
Publication:
Concrete International
Volume:
7
Issue:
3
Appears on pages(s):
35-40
Keywords:
beams (supports); cracking (fracturing); deformation; ductility; fiber reinforced concretes; flexural strength; metal fibers; shear strength
DOI:
Date:
3/1/1985
Abstract:
To evaluate the effectiveness of steel fibers on shear strength and shear deformation, tests were conducted on T-beams with 2 to 4 percent main reinforcing steel, and on rectangular beams. The fiber content was varied to a maximum of 1.2 percent by volume, and the ability of fibers and stirrups to act compositely was studied. It was shown that fibers control the dowel cracking, and also control deflection, strains, and rotation due to shear loads. Steel fibers clearly enhance the ultimate shear strength of reinforced concrete beams, the extent of such increase depending on the shape of the cross section, the amount of tension steel, and the fiber volume.