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Acoustic emission characteristics of interface between aggregate and mortar under shear loading

  • Acoustic Methods
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Russian Journal of Nondestructive Testing Aims and scope Submit manuscript

Abstract

The micro structure of the aggregate-mortar interface is directly related to the macroscopic properties of cement-based materials, but it is difficult to measure the deformation and macroscopic characteristics by using traditional methods. In order to study the feature of the shear failure process of aggregate-mortar interface and to analyze its damage mechanism, the whole shear damage processes of interface specimens for granite-mortar are monitored by the full-digital acoustic emission (AE) acquisition system. Based on the statistic’s analysis of AE signals associated with interface damage processes comprehensively, typical AE characteristics are summed up from the aspect of accumulation characteristics of AE signals and time history plots of single AE parameters to distribution analysis of combined AE parameters. The research result is of great reference value for further recognition of physical mechanism for concrete damage processes and for a deep understanding of aggregate-mortar interfacial damage mechanism.

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Authors and Affiliations

  1. College of Civil and Transportation Engineering, Hohai University, Nanjing, 210098, China

    Y. Wang, S. J. Chen & H. T. Zhao

  2. School of Architecture and Civil Engineering, Jinling Institute of Technology, Nanjing, 210001, China

    Y. Z. Chen

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  1. Y. Wang
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  2. S. J. Chen
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  3. H. T. Zhao
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Correspondence to Y. Wang.

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Wang, Y., Chen, S.J., Zhao, H.T. et al. Acoustic emission characteristics of interface between aggregate and mortar under shear loading. Russ J Nondestruct Test 51, 497–508 (2015). https://doi.org/10.1134/S1061830915080094

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  • DOI: https://doi.org/10.1134/S1061830915080094

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