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Static and dynamic penetration tests of reinforced concrete (RC) slab specimens are describedand discussed. The experimental study was aimed at a better understanding of mechanisms that areinvolved in dynamic penetration, through their identification in static tests, and by establishing theirrelative influence in similar dynamic cases. The RC specimens were 80 80-cm square plates, and theywere made of 30 MPa concrete. The non-deforming steel penetrator was a 50-m diameter stel rod witha conical nose of 1.5 aspect ratio. Impact penetration tests were carried out with an air gun, whichlaunched the projectiles at velocities of up to 300 m/sec. The static tests were conducted using a closedloop displacement control actuator, where the penetrator was pushed at a constant rate of displacementinto the specimen. The static tests reveal important mechanisms that govern the penetration process andtherefore contribute to a better understanding of RC barriers resistance to non-deforming projectilesimpact.