High Impact Resistant Concrete (HIRC)

With the high strength and ductility of CRC it is well suited for resisting impact loads. The ductile performance of CRC helps distribute local loads to larger parts of the structure. This has been demonstrated in tests with explosives, but it has also been demonstrated for projectiles. In this case the CRC matrix is combined with a special reinforcement. The picture shows CRC slabs after being hit with 50 cm long projectile fired from a cannon at 300 m distance. The weight of the projectile was 47 kg.

The thickness of each slab is 200 mm. 5 slabs were placed together and the projectile was caught in the first 2, causing no damage to the remaining slabs.