Steel-fiber reinforced concrete slabs have good blast and spall resistance. In this study, compression and splitting tensile experiments were carried out to obtain the basic quasi-static mechanical properties of the steel-fiber concrete specimens and the influence of steel-fiber parameters was revealed. In-field explosion experiments were performed to study the dynamic responses and damage modes of the steel-fiber reinforced concrete slabs. Five typical spall damage modes were observed, the distribution law of the spalling fragments was obtained, and the influence of steel-fiber shape, length, length–diameter ratio and volume percentage on the spall performance were revealed. These results will provide a basis for the application of steel-fiber reinforced concrete slabs in protective structures.

钢纤维混凝土板具有良好的抗爆炸性和抗剥落性。在这项研究中，进行了压缩和分裂拉伸试验，以获得钢纤维混凝土试件的基本准静态力学性能，并揭示了钢纤维参数的影响。进行了现场爆炸实验，以研究钢纤维增强混凝土板的动力响应和损伤模式。观察了五种典型的剥落破坏模式，得到了剥落碎片的分布规律，揭示了钢纤维的形状，长度，长径比和体积百分比对剥落性能的影响。这些结果将为钢纤维增强混凝土板在防护结构中的应用提供基础。