Residual Velocity Of The Non-deformable
Projectile After Perforating The Ultra-high
Performance Fibre Reinforced Concrete
Author(s)
R. Sovják, T. Vavřiník, M. Frydrýn, T. Mičunek,
J. Zatloukal & P. Máca
Abstract
This contribution is focused on the optimal fibre content in the ultra-high
performance fibre reinforced concrete (UHPFRC) mixture with respect to the
residual velocity of the non-deformable projectile after perforating the UHPFRC
slabs. Impact velocity of the non-deformable projectile was in the range of
700 m/s. The UHPFRC used in this study exceeded 150 MPa in uniaxial
compression and tensile strength was around 10 MPa. In total 24 UHPFRC slabs
with different fibre content were tested for impact loading. In addition, 8 slabs
were tested for comparison including high strength concrete (HSC) and
conventional fibre reinforced concrete (FRC). It was verified experimentally that
UHPFRC had an excellent impact resistance compared to conventional materials
such as FRC or HSC. Further it was found that optimal fibre content in UHPFRC
for impact resistant structures is 2% by volume. Usage of less than 2% of fibre
concrete by volume led to higher residual velocity of the projectile after
perforating the slab and also to higher debris fragment mass.
Keywords: UHPFRC, fibre content, semiautomatic rifle, projectile impact,
perforation, residual velocity, debris fragment mass.
Keywords
UHPFRC, fibre content, semiautomatic rifle, projectile impact,perforation, residual velocity, debris fragment mass.
Related Book
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