Reactive Powder Concrete Plate Response To A
Flat Projectile Impact
Author(s)
Y.-S. Tai & C.-C. Tang
Abstract
Reactive powder concrete (RPC), which is a composite that has been developed
in recent years, is a special mixture that is cured especially to have a higher
compressive strength than that of concrete (about 200 MPa). Adding a few steel
fibers can greatly improve its tensile and bending strength, its impact resistance,
and its toughness. It is therefore expected to be used to containment structures of
nuclear power plants and protect military facilities. In this study, high-velocity
impact experiments were conducted to assess the resistance of the ultra-high
strength concrete targets. Test variables include impact velocity and the addition
of steel fibers. The results of the test show that RPC plates, because of their
higher compressive strength, are more fragile than NC plates but on addition of a
small amount of steel fibers a significant improvement in impact resistance was
observed in the target plates. In addition, a numerical simulation using the
nonlinear finite element code LS-DYNA was also performed. The
Johnson-Holmquist concrete material constitutive model was used. The
numerical results are in agreement with the results obtained from the experiment.
Keywords: impact experiment, RPC, steel fiber reinforced concrete, numerical
simulations.
1 Introduction
The response of concrete to transient dynamic loading is investigated extensively
for both civil and military applications. In the past, for a structure to have greater
impact resistance, mostly a higher reinforcement ratio was adopted or the
thickness of structural members was increased. Because the reinforcement is too
dense in structural members, the concrete is quite difficult to cast. In modern
Keywords
impact experiment, RPC, steel fiber reinforced concrete, numerical
simulations.
Related Book
Other papers in this volume
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