Title:
Ultimate Strength of Confined Very High-Strength Concretes
Author(s):
S. Setunge, M. M. Attard, and P. Darvall
Publication:
Structural Journal
Volume:
90
Issue:
6
Appears on pages(s):
632-641
Keywords:
columns (supports); confined concrete; structural design; stress-strain relationship; structural analysis; Structural Research
DOI:
10.14359/4458
Date:
11/1/1993
Abstract:
Results are presented from an experimental investigation into the ultimate strength of concrete under triaxial loading. Several mixes were used with strengths ranging from normal strength concrete to very high-strength concrete. Other parameters in the mixes were the use of silica fume and type of crushed coarse aggregate with three types of aggregates studied. A two-parameter model for the failure envelope for confined concrete was adopted. Empirical expressions for the failure envelope were derived for normal strength concrete and very high-strength concrete with and without silica fume. A simple lower bound expression for the ultimate strength of concrete under confinement is presented for any grade of concrete.