We tested cement mortar reinforced with basalt and polypropylene fibers by three-point bending. Possible mechanisms of crack propagation in fibrous concrete are analyzed by the method of acoustic emission (AE). We determine the influence of different volume fractions of basalt and polypropylene fibers on the “load–deflection” curves, ultimate load, deformation, AE-activity, and the parameters of AE signals. It is shown that, by analyzing the changes in the parameters of AE signals in the process of accumulation of defects in reinforced cement mortar, it is possible to identify the types and mechanisms of its fracture.

中文翻译：

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玄武岩和聚丙烯纤维增强水泥砂浆断裂的机理鉴定

我们通过三点弯曲测试了用玄武岩和聚丙烯纤维增强的水泥砂浆。通过声发射（AE）方法分析了纤维混凝土中裂纹扩展的可能机理。我们确定玄武岩纤维和聚丙烯纤维的不同体积分数对“载荷-挠度”曲线，极限载荷，变形，AE活性和AE信号参数的影响。结果表明，通过分析增强水泥砂浆缺陷累积过程中声发射信号参数的变化，可以确定其破裂的类型和机理。