High-strength, lightweight concrete materials have been widely used in many building structures, while the dynamic behaviors under high-strain-rate loading are not well understood. Two groups of high-strength, lightweight concrete specimens were cast for static and dynamic tests. The compressive strengths and densities of the specimens were 39.6 N/mm² and 1.3 t/m³, respectively. Specimens with length-to-diameter ratios of 0.5 and 150-mm-diameter were tested using a 155-mm-diameter split Hopkinson pressure bar (SHPB). A copper disc was applied as the pulse shaper, and the resulting impact velocity was proven to be stable in each test scenario. The damage mode of the concrete specimens was brittle failure, and fragments with different sizes were generated after each impact. The higher the impact velocity was, the smaller the sizes of the fragments became. A representative stress–strain curve was developed based on the geometric shape of the observed curve for each specimen. The dynamic strength generally increased with the impact velocity for strain rates ranging from 40 to 140 s⁻¹. A new profile consisting of one parabola and two straight lines was developed to represent the experimental dynamic increase factor. The energy absorption density and fragility curves were computed to understand the energy absorption and fragility properties of the specimens.

高强度，轻质混凝土材料已广泛用于许多建筑结构中，但人们对高应变率载荷下的动态行为却知之甚少。铸造了两组高强度，轻质的混凝土试样，用于静态和动态测试。样品的抗压强度和密度分别为39.6 N / mm ²和1.3 t / m ³， 分别。使用直径为155毫米的霍普金森分流式压力棒（SHPB）对长度与直径之比为0.5和150毫米的样品进行了测试。应用了铜盘作为脉冲整形器，并证明了所产生的冲击速度在每种测试情况下都是稳定的。混凝土试件的破坏方式为脆性破坏，每次冲击后产生不同尺寸的碎片。冲击速度越高，碎片的尺寸越小。根据每个样品观察到的曲线的几何形状，绘制出代表性的应力-应变曲线。在40至140 s ^-1的应变速率下，动态强度通常随冲击速度而增加。开发了由一条抛物线和两条直线组成的新轮廓，以表示实验动态增加因子。计算能量吸收密度和脆性曲线以了解样品的能量吸收和脆性性质。