Abstract: The industrial wastes, slag and fly ash, were used to produce geopolymeric concrete (GC). The impact mechanical properties of GC, including compressive strength, deformation and energy absorption capacities, were studied using a 100-mm-diameter split Hopkinson pressure bar (SHPB) apparatus. The experimental results show that the impact properties of GC exhibit strong strain rate dependency, and the transition point from low strain rate sensitivity to high sensitivity occurs at 42.7 s-1. The critical strain decreases with the increase of dynamic compressive strength. GC is a type of quasi-brittle material. The energy absorption property should be paid more attention to than strength or deformation capacity.