The use of acoustic emissions technique in the monitoring of fracturing in concrete using soundless chemical demolition agent

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Published Sep 2, 2019
DOI https://doi.org/10.3221/IGF-ESIS.50.42

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Vassilios Saltas
Laboratory of Geophysics and Seismology – UNESCO Chair in Solid Earth Physics and Geohazards Risk Reduction, Technological Educational Institute of Crete, Greece
https://orcid.org/0000-0003-4958-2876 Despoina Peraki
Laboratory of Geophysics and Seismology – UNESCO Chair in Solid Earth Physics and Geohazards Risk Reduction, Technological Educational Institute of Crete, Greece
Filippos Vallianatos
Laboratory of Geophysics and Seismology – UNESCO Chair in Solid Earth Physics and Geohazards Risk Reduction, Technological Educational Institute of Crete, Greece Dept of Geophysics–Geothermics, Faculty of Geology and Geoenvironment, National and Kapodistrian University of Athens, Greece

Abstract

Soundless chemical demolition agents (SCDAs) have been used during the last decades in the demolition of boulders and concrete structures as well as in open-surface and sub-surface rock excavation, as an alternative to the use of explosives posing safety risks. However, the knowledge of the governing fracture mechanisms in brittle materials is rather limited. In the present work, we thoroughly investigate the use of the acoustic emission technique to study the SCDA-induced fracture process in concrete blocks. Energy-related features and waveform parameters of the recorded AE activity are correlated to the fracture mode of the concrete where a quasi-static behavior is observed. Monitoring of the progressive fracture is also achieved by the 3D localization of the AE sources. The distribution of the inter-event times of the recorded hits is further analyzed in the context of non-extensive statistical physics.

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    Issue
    Vol. 13 No. 50 (2019): October 2019
    Section
    SI: Research activities of the Greek Society of Experimental Mechanics of Materi

    How to Cite

    Saltas, V., Peraki, D., & Vallianatos, F. (2019). The use of acoustic emissions technique in the monitoring of fracturing in concrete using soundless chemical demolition agent. Frattura Ed Integrità Strutturale, 13(50), 505–516. https://doi.org/10.3221/IGF-ESIS.50.42

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