摘 要：以矿渣与粉煤灰为原材料，制备地质聚合物混凝土（geopolymeric concrete, GC）。采用Φ100 mm分离式霍普金森压杆（split Hopkinson pressure bar, SHPB）装置研究了不同强度等级的GC的冲击力学性能，包括抗压强度、变形及能量吸收特性的应变率效应问题。结果表明：GC的冲击力学性能呈现出显著的应变率相关性，强度的应变率敏感值为42.7 s-1；随着强度等级的提高，GC的变形能力反而降低。GC属于准脆性材料，相对于单一的强度或变形特性，GC的能量吸收特性更值得关注。

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.