Journal article
Acoustic emission waveform characterization of crack origin and mode in fractured and ASR damaged concrete
Cement & concrete composites, v 60, pp 135-145
01 Jul 2015
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Abstract
Different constituents of concrete can have cracking behavior that varies in terms of the acoustic waveform that is generated. Understanding the waveform may provide insight into the source and behavior of a crack that occurs in a cementitious composite. In this study, passive acoustic emission (AE) was used to investigate the waveform properties of the individual components of concrete (i.e., aggregate, paste, and interfacial transition zone (ITZ)). First, acoustic events produced by cracks generated using mechanical loading in a wedge splitting test were detected. It was observed that cracks that occurred through the aggregate have an AE frequency range between 300 kHz and 400 kHz, while cracks that propagated through the matrix (paste and ITZ) have a frequency range between 100 kHz and 300 kHz. Second, tests were performed using samples that were susceptible to alkali silica reaction; and AE and X-ray computed tomography were used to detect cracking. AE events with a frequency range between 300 kHz and 400 kHz were detected at early ages, suggesting the initiation of cracks within reactive aggregate. At later ages, AE events were detected with frequency ranges of 100-300 kHz, indicating crack development and propagation in the matrix. (C) 2015 Elsevier Ltd. All rights reserved.
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Details
- Title
- Acoustic emission waveform characterization of crack origin and mode in fractured and ASR damaged concrete
- Creators
- Yaghoob Farnam - Purdue University West LafayetteMette Rica Geiker - Norwegian University of Science and TechnologyDale Bentz - National Institute of Standards and TechnologyJason Weiss - Purdue University West Lafayette
- Publication Details
- Cement & concrete composites, v 60, pp 135-145
- Publisher
- Elsevier
- Number of pages
- 11
- Grant note
- Knud Hojgaard Foundation
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000355711200014
- Scopus ID
- 2-s2.0-84928495312
- Other Identifier
- 991020836369004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Construction & Building Technology
- Materials Science, Composites