This study presents the performance of carbon textile reinforcement used as strengthening layers for reinforced concrete (RC) slabs under repeated impact loads. In order to reveal the contribution of carbon textile reinforcement to the behavior of RC slabs under impacts, five identical RC slabs with the dimensions of 1.5 m × 1.5 m × 0.20 m were manufactured and tested at the Technische Universität Dresden. To understand failure mechanisms of RC slabs under impact loadings, two specimens were kept unstrengthened and tested under different impact velocities. The rest of the specimens was strengthened with three different carbon textile reinforcements embedded in an additional 2 cm fine‐grained concrete layer and subjected to impact loads with the same striker velocity. The results observed from the tests revealed that the carbon textile reinforcement is very effective at increasing the impact capacities of the specimens. Additionally, displacement–time histories and crack profiles are highly affected due to the carbon textile reinforcement types and ratios during the impact loadings.

中文翻译：

---

反复冲击载荷下碳纤维布加固钢筋混凝土板的试验研究

这项研究介绍了碳纤维增强材料在反复冲击载荷下用作增强混凝土（RC）板的增强层的性能。为了揭示碳纤维增强材料对钢筋混凝土板在冲击下的行为的贡献，在德累斯顿工业大学生产并测试了五个尺寸为1.5 m×1.5 m×0.20 m的相同钢筋混凝土板。为了了解钢筋混凝土平板在冲击载荷作用下的破坏机理，将两个试样保持未加强状态，并在不同的冲击速度下进行测试。其余的样品通过在另外2 cm细粒混凝土层中嵌入三种不同的碳纤维增强材料进行加固，并以相同的撞针速度承受冲击载荷。从测试中观察到的结果表明，碳纤维增强材料在增加样品的抗冲击能力方面非常有效。此外，由于碳纤维增强材料的类型和比率在冲击载荷作用下，位移-时间历史和裂纹轮廓也受到很大影响。