This paper describes a series of missile impact tests of reinforced concrete slabs. The primary objective was to investigate the local behavior of slabs. The method of testing consists of making steel missiles collide against reinforced concrete slabs. A total of 12 tests were performed varying the targets and missile conditions. The following conclusions were obtained in the tests: (1) the degree of damage from a soft-nosed missile is less than that of a hard-nosed missile; (2) steel lining is effective in preventing scabbing; (3) the impact resistance of a double reinforced concrete slab is inferior to that of a single reinforced concrete slab in case of a hard-nosed missile, and almost equal in case of a soft-nosed missile; and (4) the existing formulae for evaluating critical thicknesses against perforation and scabbing give slab thicknesses on the conservative side.
Isao, K. (1991). An experimental study on local behavior of reinforced concrete slabs to missile impact. Nuclear Engineering and Design, 130(2), 121–132. https://doi.org/10.1016/0029-5493(91)90121-W