Effect of reinforcing fiber types on the fracture process and acoustic emission activity characteristics in high performance fiber-reinforced cementitious composites

Author(s): S-W. Kim, H-D. Yun, E. Jeon, S-M. Jeon
Paper category: Workshop
Book title: Fifth International RILEM Workshop on High Performance Fiber Reinforced Cement Composites (HPFRCC5)
Editor(s): H.W. Reinhardt, A.E. Naaman
ISBN: 978-2-35158-046-2
Pages: 119 - 124
Total Pages: 6
Language: English

Abstract: 
Fiber is an important ingredient in high performance fiber-reinforced cementitious composite (HPFRCC), which can control fracture of cementitious composite by bridging action. The properties of reinforcing fiber, such as tensile strength, aspect ratio and elastic modulus, 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-failure mechanism of HPFRCC. This investigation of distress attempts to relate external behavior to internal signals of distress through acoustic emission. This helps to identify critical internal distress 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 characteristics of 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 technique is a valuable tool to study the failure mechanism of HPFRCC.

Online publication: 2014
Publication Type: full_text
Public price (Euros): 0.00