Over the past century, a considerable amount of research has been conducted to study the brittle behavior of traditional concrete. Currently, fiber reinforcement material appears as an effective way to enhance general concrete performance under diverse loads. In the present study, an experimental investigation of the steel fibers’ effect on the bending behavior of concrete beams is performed. The main objectives were first to see whether the use of steel fibers allows the total substitution of traditional transverse reinforcement (stirrups) and second to examine the effect of a combination of steel fibers and longitudinal rebars. The experimental program includes four beam specimens of dimensions 1700 mm × 80 mm × 150 mm. The results show that the fiber volume fraction of 100 kg/m 3 of uncoated steel fibers, which corresponds to 1.27% fiber volume fraction, can be used to replace the transverse reinforcement. Besides, the obtained results show that the combination of the steel fibers with longitudinal reinforcement is necessary to obtain a better resistance under bending.

中文翻译：

---

无箍筋钢纤维混凝土梁的抗剪性能：试验研究

在过去的一个世纪里，已经进行了大量的研究来研究传统混凝土的脆性行为。目前，纤维增强材料似乎是一种在不同载荷下提高混凝土整体性能的有效方法。在本研究中，对钢纤维对混凝土梁弯曲行为的影响进行了实验研究。主要目标首先是查看钢纤维的使用是否允许完全替代传统的横向钢筋（箍筋），其次是检查钢纤维和纵向钢筋组合的效果。实验程序包括四个尺寸为 1700 mm × 80 mm × 150 mm 的梁试样。结果表明，未涂层钢纤维的纤维体积分数为100 kg/m 3 ，对应于1。27%的纤维体积分数，可用于替代横向钢筋。此外，获得的结果表明，钢纤维与纵向钢筋的组合对于获得更好的弯曲抗力是必要的。