Title:
Ballistic Perforation Resistance of High-Strength Concrete Slabs
Author(s):
Tore Borvik, Odd E. Gjorv, and Magnus Langseth
Publication:
Concrete International
Volume:
29
Issue:
6
Appears on pages(s):
45-50
Keywords:
ballistic perforation resistance; bullet penetration; high-density concrete; high-strength concrete; steel fiber
DOI:
Date:
6/1/2007
Abstract:
The perforation resistance to conical-nosed steel projectiles was tested for 100 mm (4 in.) thick high-strength and high-density concrete slabs. Some of the specimens also contained steel fibers. Although compressive strengths increased by a factor of about 5 from 41.4 to 196.6 MPa (6000 to 28,500 psi), the ballistic limit velocity only increased by about 45%. An increase in concrete density from 2520 to 3828 kg/m3 (157 to 239 lb/ft3) produced an even smaller effect on the ballistic limit velocity than that of compressive strength. The test results are also compared to empirical equations for projectile perforation of concrete slabs.