Title:
Strength and Behavior of Confined Steel Fiber Reinforced Concrete Columns
Author(s):
N. Ganesan and J. V. Ramana Murthy
Publication:
Materials Journal
Volume:
87
Issue:
3
Appears on pages(s):
221-227
Keywords:
columns (supports); compressive strength; confined concrete; ductility; fiber reinforced concretes; metal fibers; reinforcing steels; stress-strain diagram; Materials Research
DOI:
10.14359/2103
Date:
5/1/1990
Abstract:
An experimental investigation on the strength and behavior of short, confined reinforced concrete columns with and without steel fibers has been carried out. The columns were subjected to monotonic axial compression until failure. The volume fraction (1.5 percent and aspect ratio, 70) of steel fibers used were the same in all the confined steel fiber reinforced concrete (SFRC) columns. The primary variable considered in this study was the amount of lateral steel. Four different percentages of volumetric ratio of lateral reinforcement were considered: 0.6, 0.8, 1.6, and 2.4 percent. The stress-strain characteristics and equivalent confinement conditions of confined SFRC and confined reinforced concrete columns were compared. Because earlier models proposed for confined reinforced concrete did not compare satisfactorily with the experimental values of confined SFRC specimens, an analytical model for confined SFRC was proposed.