Recently, investigators have found that the application of prestressing, addition of fibers, and steel lining can improve concrete's overall performance, including its impact resistance. There is, however, no study in the available literature on the impact response of steel-lined post-tensioned fiber-reinforced concrete (PFRC). This study examines how steel-lined PFRC responds to projectile impact. The PFRC slabs with/without a steel lining on the rear face were tested against the impact of hemispherical-nosed projectiles at varied velocities using a gas-gun facility. The test results revealed that steel fiber volume increased the ballistic limit, reduced penetration and scabbing depths, and reduced ejected mass substantially from the back face. The use of steel lining on the back face caused a substantial increase in the ballistic limit and caused a significant reduction in the ejected mass. NDRC equations are modified to incorporate the effects of prestressing, steel fibers, and steel lining to predict penetration depth. Another empirical model is developed for ballistic limit prediction of the prestressed steel-lined fiber-reinforced concrete slab by incorporating the prestressing, steel fibers, and steel lining in the UKAEA formula. The models agreed well with the experimental results.

最近，研究人员发现应用预应力、添加纤维和钢衬可以提高混凝土的整体性能，包括抗冲击性。然而，现有文献中没有关于钢衬后张预应力纤维混凝土（PFRC）冲击响应的研究。本研究考察了钢衬 PFRC 如何响应射弹冲击。使用气枪设备对背面有/没有钢衬里的 PFRC 板进行了半球形弹头炮弹在不同速度下的冲击测试。测试结果表明，钢纤维体积增加了弹道极限，减少了穿透和结疤深度，并大大减少了背面的弹射质量。在背面使用钢衬导致弹道极限大幅增加，并导致弹射质量显着减少。修改 NDRC 方程以结合预应力、钢纤维和钢衬的影响来预测穿透深度。通过将预应力、钢纤维和钢衬里纳入 UKAEA 公式，开发了另一个经验模型来预测预应力钢衬纤维混凝土板的弹道极限。模型与实验结果非常吻合。通过将预应力、钢纤维和钢衬里纳入 UKAEA 公式，开发了另一个经验模型来预测预应力钢衬纤维混凝土板的弹道极限。模型与实验结果非常吻合。通过将预应力、钢纤维和钢衬里纳入 UKAEA 公式，开发了另一个经验模型来预测预应力钢衬纤维混凝土板的弹道极限。模型与实验结果非常吻合。