SHPB Experimental Study of Steel Fiber Reinforced Concrete in Low-temperature

Abstract

Three different content steel fiber reinforced concrete specimen (volume fractions were, 1%, 1.5%, 2.0%) were carried out impact test at -40°C by 74mm split Hopkinson pressure bar (SHPB) test device. The influence of strain rate on steel fiber reinforced concrete in a low temperature environment was analyzed, and affect law of steel fiber content on dynamic strength was probed. The results show that steel fiber addition on the dynamic mechanical properties of concrete has greatly improved and ideal steel fiber content of 1.5%.