Title: Response of Steel Fiber-Reinforced Concrete Beams with and without Stirrups

Author(s): Hassan Aoude, Mehdi Belghiti, William D. Cook, and Denis Mitchell

Publication: Structural Journal

Volume: 109

Issue: 3

Appears on pages(s): 359-368

Keywords: beams; cracking; ductility; fiber-reinforced concrete; flexural failure; shear failure; shear reinforcement; steel fiber-reinforced concrete; steel fibers

DOI: 10.14359/51683749

Date: 5/1/2012

Abstract:
A series of nine full-scale reinforced concrete (RC) and steel fiber-reinforced concrete (SFRC) beams were tested to study the effects of steel fibers on shear capacity, failure mechanism, and crack control. Six of the specimens were constructed without shear reinforcement. In addition, three specimens were detailed in accordance with the minimum shear reinforcement requirements of CSA A23.3-04 to examine the influence of fibers on ductility. The results demonstrate that the addition of fibers leads to improved shear resistance in shear-deficient beams. Furthermore, the addition of fibers in beams that contain minimum shear reinforcement results in improved ductility and crack control. A procedure for predicting the shear resistance of SFRC beams is also presented.