Title:
Flexural Ductility of Ultra-High-Strength Concrete Members
Author(s):
SungG-Woo Shin, Satyendra K. Ghosh, and Jaime Moreno
Publication:
Structural Journal
Volume:
86
Issue:
4
Appears on pages(s):
394-400
Keywords:
axial loads; columns (supports); ductility; flexural strength; high-strength concretes; reinforced concrete; reinforcing steels; strength; Structural Research
DOI:
10.14359/2877
Date:
7/1/1989
Abstract:
While reinforced concrete columns possess little flexural ductility under high axial loads, concern has been expressed that at any axial load such ductility may decrease further with the use of very high strength concrete. An experimental investigation was undertaken in 1984 at the University of Illinois at Chicago to address that concern. Three sets of 12 specimens each were manufactured with concrete compressive strengths of 4, 12, and 15 ksi (27.6, 82.7, and 103.4 MPa). The test variables were concrete strength, amount of longitudinal reinforcement, and spacing of ties. Although the tests in this study were conducted on members without axial load, the concern about the flexural ductility of high-strength concrete columns appears to be unfounded on the basis of the test results.