Title: Instantaneous and Long-Term Deflections of Steel Fiber Reinforced Concrete Beams

Author(s): K. H. Tan, P. Paramasivam, and K. C. Tan

Publication: Structural Journal

Volume: 91

Issue: 4

Appears on pages(s): 384-393

Keywords: beams (supports); creep properties; deflection; fiber reinforced concretes; flexural strength; serviceability; shrinkage; reinforcing steels; Structural Research

DOI: 10.14359/4144

Date: 7/1/1994

Abstract:
In this study, the instantaneous and long-term deflections of reinforced concrete beams with steel fibers are studied. Deflections were monitored on 14 steel fiber reinforced concrete (SFRC) beams, five of which were tested monotonically to flexural failure and the others subjected to various levels of sustained loading. An analytical method following the ACI approach is proposed for the prediction of both the instantaneous and long-term deflections of the beams. The method accounts for the enhanced cracking load and the beam stiffness, as well as the creep and shrinkage restraints due to fibers. The predictions of the method were compared with test results of the present study and those available in the literature. In general, good agreement between the predicted and experimental values was obtained, particularly in the service load range.