FraMCoS 6 2007 Catania, Italy

Influence of the saturation degree and of the mix proportions on the behavior of concrete under high level of stresses

The aim of the present study is to identify the concrete behavior under severe dynamical load- ing (explosions or ballistic impacts). This paper presents the effect of both the saturation degree and the wa- ter-cement ratio on the concrete behavior…

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Year 2007
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Abstract

The aim of the present study is to identify the concrete behavior under severe dynamical load- ing (explosions or ballistic impacts). This paper presents the effect of both the saturation degree and the wa- ter-cement ratio on the concrete behavior under static triaxial loading. The tests are done using a press with high capacities: confining pressure up to 650MPa and axial stress up to 2.3GPa. The test results show that the saturation degree has a major influence on the concrete deviatoric behavior. The strength of dried concrete strongly increases with the confining pressure whereas it is a constant for saturated samples beyond a confin- ing pressure of 100MPa. The results also show that the concrete behaves like a granular stacking under high confinement without any influence of the cement paste strength.