Title:
Bond of Confined Steel Fiber Reinforced Concrete to Deformed Bars
Author(s):
Parviz Soroushian, Faiz Mirza, and Abdulrahman Alhozaimy
Publication:
Materials Journal
Volume:
91
Issue:
2
Appears on pages(s):
141-149
Keywords:
beam-column frame; beams (supports); bonding; concretes; bond (concrete to reinforcement); confined concrete; deformed reinforcement; fiber reinforced concretes; reinforced concrete; reinforcing steels; Materials Research
DOI:
10.14359/4565
Date:
3/1/1994
Abstract:
The effects of steel fiber reinforcement on local bond behavior of deformed bars in confined concrete were investigated. The key variables of the experimental study were the volume fraction, aspect (length-to-diameter) ratio, and type (mechanical deformation) of steel fibers. Local bond strength was observed to increase by about one-third when 0.5 percent volume fraction of steel fibers was added to concrete. Further increase in fiber volume fraction, however, did not have statistically significant effects on bond strength. The presence of fibers also led to reduced slip at peak bond stress. The effects of fiber aspect ratio and type on local bond strength were not significant. Bond slip at peak bond stress, however, increased with increasing aspect ratio of steel fibers.