Strength and damage of concrete under high triaxial loading

This study focuses on identifying concrete behavior under severe loading (near field detonation or ballistic impacts). In order to reproduce high stress levels with well-controlled loading paths, static tests are carried out on concrete samples by mean of a very high-capacity triaxial press. Experim...

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Bibliographic Details
Published in:European journal of environmental and civil engineering 2010-01, Vol.14 (6-7), p.777-803
Main Authors: Malecot, Y., Daudeville, L., Dupray, F., Poinard, C., Buzaud, E.
Format: Article
Language:eng ; jpn
Subjects:
Engineering Sciences
Mechanics
Online Access:Get full text
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Summary:This study focuses on identifying concrete behavior under severe loading (near field detonation or ballistic impacts). In order to reproduce high stress levels with well-controlled loading paths, static tests are carried out on concrete samples by mean of a very high-capacity triaxial press. Experimental results indicate a sizeable change in concrete behavior with confining pressure. At low pressure values, the concrete exhibits brittle behavior with failure caused by a localized damage mechanism. In contrast, at high confining pressures, the concrete becomes a ductile material, and failure is associated with diffuse material damage. These tests also show an evolution of the elastic characteristics of concrete. A numerical modeling of these previous experiments is performed at a mesoscopic scale. It provides a reproduction of the main characteristics of concrete behavior under high confinement, both qualitatively and quantitatively. © 2010 Taylor & Francis Group, LLC.
ISSN:1964-8189
2116-7214
DOI:10.3166/ejece.14.777-803