Title:
Fiber Reinforced Concrete Beams Under Torsion
Author(s):
E. I. El-Niema
Publication:
Structural Journal
Volume:
90
Issue:
5
Appears on pages(s):
489-495
Keywords:
beams (supports); cracking (fracturing); fibers; stiffness; fiber reinforced concrete; torsion; volume change; Structural Research
DOI:
10.14359/3939
Date:
9/1/1993
Abstract:
The effect of steel fibers on the behavior and ultimate strength of reinforced concrete beams under torsion is studied. Glued standard bright wires of designation ZC60/0.8 were used. A total of six beams was cast and tested. Three beams reinforced with longitudinal reinforcements had fiber percentages of only 0, 0.6, and 1.2, respectively. The other three beams reinforced with longitudinal reinforcement stirrups had the same percentage of fibers as the first group. Improvements in the first crack and ultimate strengths were noticed. These improvements depend on the volume percentages of fibers. The experimental ultimate strength values were compared with the theoretical values obtained from torsion formulas. A good correlation of results is shown clearly.