The Blast Performance Of Real-scale Reinforced
Concrete Specimens With Varying Fiber Types
And Content
Author(s)
M. Kovar, M. Foglar & R. Hajek
Abstract
According to recent publications, from 2005 to 2008 there were more than
13,000 terrorist attacks around the world, which took more than 73,000 human
lives. The attacks were targeted mainly on the technical and civic infrastructure,
like governmental buildings, bridges, etc. Due to improved ductility, fibrereinforced
concrete (FRC) shows better performance under blast and impact
loading compared to conventionally reinforced concrete. Also higher concrete
strength shows better blast performance. Field tests of FRC and reinforced
concrete specimens were performed in cooperation with the Czech Army corps
in the military training area Boletice. The test were performed using real scale
reinforced concrete precast slabs (6 x 1.5 x 0.3 m) with varying fiber content,
fiber type, fiber strength and concrete strength class and 25 kg of TNT charges
placed in distance from the slab for better simulation of real in-situ conditions.
The paper presents conclusions from three sets of tests from years 2010, 2011
and 2013. Eleven specimens were tested in total. Two specimens were without
fibers and had different concrete strength. Polypropylen fibers with length
54 mm and strength of 600 MPa and steel fibers with low ductility 25 mm long
and strength 400 MPa were added in different content (0.5% and 1%) to the
other nine specimens.
Keywords: blast loading, fiber reinforced concrete.
Keywords
blast loading, fiber reinforced concrete.
Related Book
Other papers in this volume
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