Title:
Behavior and Modeling of Concrete Subject to Variable Confining Pressure
Author(s):
Kent A. Harries and Gayatri Kharel
Publication:
Materials Journal
Volume:
99
Issue:
2
Appears on pages(s):
180-189
Keywords:
dilation; Poisson’s ratio; strain; stress.
DOI:
10.14359/11711
Date:
3/1/2002
Abstract:
The behavior of concrete subject to variable levels of confining pressure under concentric axial loading is presented. An extensive experimental investigation of this behavior, using fiber-reinforced polymer-confined concrete cylinders is used to develop an understanding of the relationships required to accurately predict the behavior of concrete subject to passively induced, varying levels of confinement. In particular, the relationship between transverse and longitudinal strains–the dilation relationship—is investigated, and a model for this behavior, based on the stiffness of the confining materials, is proposed. The established relationships are combined into an iterative model for determining the complete stress-strain relationship of concrete subject to variable confining pressure.