Title:
Cracking and Tension Stiffening of High-Strength Concrete Panels
Author(s):
N. Dawood and H. Marzouk
Publication:
Structural Journal
Volume:
109
Issue:
1
Appears on pages(s):
21-30
Keywords:
axial loading; biaxial; concrete panels; cracking behavior; nuclear containments; offshore structures; stress-strain; uniaxial
DOI:
10.14359/51683490
Date:
1/1/2012
Abstract:
An experimental program was conducted recently at the Memorial University of Newfoundland (MUN) to study the tension-stiffening and cracking behavior of orthogonally reinforced concrete panels subjected to axial tension. The experimental program involved testing eight reinforced concrete panels with different concrete strengths under uniaxial or biaxial tension loading. During the duration of the tests, applied loads, strains, and crack widths were recorded. The average stress-strain relationship and crack width for concrete panels under direct tension were examined at different steel stress levels. The main objectives of this paper are to investigate the cracking behavior and tension-stiffening response of axially loaded high-strength reinforced concrete (HSC) panels and compare this behavior with the normal-strength concrete (NSC) panels. Based on the test results, a model is recommended for predicting the tensile stress-strain relationship of HSC panels under axial loading.