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首页> 外文会议>International Workshop on High Performance Fiber Reinforced Cement Composites >EFFECT OF REINFORCING FIBER TYPES ON THE FRACTUREPROCESS AND ACOUSTIC EMISSION ACTIVITYCHARACTERISTICS IN HIGH PERFORMANCE FIBER-REINFORCED CEMENTITIOUS COMPOSITES
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EFFECT OF REINFORCING FIBER TYPES ON THE FRACTUREPROCESS AND ACOUSTIC EMISSION ACTIVITYCHARACTERISTICS IN HIGH PERFORMANCE FIBER-REINFORCED CEMENTITIOUS COMPOSITES

机译：增强纤维类型对高性能纤维增强水泥复合材料骨折过程和声发射活性特征的影响

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Fiber is an important ingredient in high performance fiber-reinforced cementitiouscomposite (HPFRCC), which can control fracture of cementitious composite by bridgingaction. The properties of reinforcing fiber, such as tensile strength, aspect ratio and elasticmodulus, have great effect on the fracture behavior of HPFRCC. Acoustic emission (AE)method was used to evaluate the characteristics of fracture process and the micro-failuremechanism of HPFRCC. This investigation of distress attempts to relate external behavior tointernal signals of distress through acoustic emission. This helps to identify critical internaldistress vis-a-vis external level of stress. For these purposes, three kinds of fibers were used:PP (Polypropylene), PE (Polyethylene), SC (Steel cord). In this study, the AE characteristicsof HPFRCC reinforced with different fiber types (PE.15, PP2.0, SC0.75+PE0.75)distributions under four-point-bending were studied. The result shows that the AE techniqueis a valuable tool to study the failure mechanism of HPFRCC.
机译：纤维是高性能纤维增强胶凝质（HPFRCC）的重要成分，可通过桥接控制水泥复合材料的骨折。增强纤维的性质，例如拉伸强度，纵横比和弹性模划线，对HPFRCC的裂缝行为有很大影响。声发射（AE）方法用于评估骨折过程的特征和HPFRCC的微动机。这种对痛苦的调查试图通过声发射将外部行为与外部行为联系。这有助于识别关键的InternalDistress VIS-A-Vis对外水平的压力。出于这些目的，使用了三种纤维：PP（聚丙烯），PE（聚乙烯），SC（钢丝绳）。在本研究中，研究了用不同纤维类型加固的HPFRCC的AE特性（PE.15，PP2.0，SC0.75 + PE0.75）在四点弯曲下分布。结果表明，AE技术是研究HPFRCC失败机制的有价值的工具。

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