Title:
The Effect of Steel Fibers and Epoxy-Coated
Reinforcement on Tension Stiffening and Cracking of
Reinforced Concrete
Author(s):
Denis Mitchell, Homayoun Hosseini Abrishami, and Sidney Mindess
Publication:
Materials Journal
Volume:
93
Issue:
1
Appears on pages(s):
61-68
Keywords:
bond (concrete to reinforcement); coatings; compressive
strength; cracking (fracturing); fiber reinforced concretes; flexural strength;
DOI:
10.14359/9797
Date:
1/1/1996
Abstract:
This paper presents the tensile behavior of 12 concrete members, each reinforced with one No. 1.5 bar: The variables included normal- versus high-strength concrete, with and without steel fibers and with and without epoxy coating. In addition, two different thicknesses of epoxy coating were investigated. Steel fibers signijcantly increased tensile strength, ductility, and tension stiffening of concrete. The presence of steel fibers reduced the crack width in both normal- and high-strength concrete. No splitting cracks were observed in the specimens constructed with steel fibers. Specimens reinforced with epoxy-coated bars showed larger crack widths than specimens reinforced with uncoated bars.