This study was aimed at investigating the impact strength and fracture properties of self-compacting concrete reinforced with basalt fiber (BF), glass fiber (GF) and polypropylene fiber (PPF). In the study, BF, GF and PPF, each at a time, were added to the concrete in volume fractions of 0.15%, 0.20%, 0.25% and 0.30% for the purpose of determining their impact on the properties of fresh and hardened self-compacting fiber reinforced concrete (SCFRC). Experimental research consisted of a series of tests performed on cube, disk and notched prismatic samples. On fresh SCFRC, slump-flow, V-funnel and L-box tests were performed. Additionally, properties such as compressive and flexural strength, impact resistance, toughness and fracture energy were examined on the hardened samples. Results showed that addition of BF, GF and PPF all increased the flexural strength, impact resistance and fracture energy, whereas the no obvious change in compressive strength was observed. In contrast to the expectations, PPF mixtures exhibited higher impact resistance and fracture energy values than did the BF and GF ones.

中文翻译：

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自密实纤维增强混凝土（SCFRC）的断裂性能和抗冲击性能

本研究旨在研究玄武岩纤维 (BF)、玻璃纤维 (GF) 和聚丙烯纤维 (PPF) 增强的自密实混凝土的冲击强度和断裂性能。在研究中，BF、GF 和 PPF 每次分别以 0.15%、0.20%、0.25% 和 0.30% 的体积分数添加到混凝土中，以确定它们对新鲜和硬化自身性能的影响- 压实纤维增强混凝土 (SCFRC)。实验研究包括对立方体、圆盘和带缺口的棱柱样品进行的一系列测试。在新鲜的 SCFRC 上，进行了坍落度、V 型漏斗和 L 型箱测试。此外，还检测了硬化样品的抗压和抗弯强度、抗冲击性、韧性和断裂能等性能。结果表明，加入 BF，GF和PPF均提高了抗弯强度、抗冲击性和断裂能，而抗压强度没有明显变化。与预期相反，PPF 混合物表现出比 BF 和 GF 混合物更高的抗冲击性和断裂能值。