Basalt fiber reinforced porous expanded polystyrene-ceramsite concrete wrapped with a brass strip

Abstract

This paper aims to study the effect of brass strip wrapping on the dynamic performance of basalt fiber reinforced porous expanded polystyrene-ceramsite concrete (BECC). The specimens of BECC-B were prepared by wrapping those of BECC with brass strips. A Φ 100 mm split Hopkinson pressure bar (SHPB) apparatus was used to conduct dynamic experiments. The stress-strain curves of BECC and BECC-B were systematically analyzed. The mechanical properties, including strength properties, deformation properties and failure patterns were studied. Based on these, the energy absorbing properties were explored. The results show that the stress-strain curves have three periods: an elastic period, plateau period and declining period. Moreover, the plateau period of BECC-B is more obvious than that of BECC. The mechanical properties of BECC-B are more sensitive to strain rate than those of BECC. Analysis of the energy absorbing properties indicates that the specimens of BECC-B can absorb much more energy than those of BECC under the same strain rate. To sum up, BECC-B is a promising energy absorbing material, which can be used as the distribution layers in defensive engineering.