Evaluation of Three-Point Bending Fracture Tests of Selected Concrete: Crack Initiation and Acoustic Emission Parameters

Abstract:

In this paper, authors concentrate attention on crack initiation and acoustic emission (AE) parameters obtained from records of three-point bending fracture tests on eight sets of concrete specimens with initial stress concentrator at the age of 28 days. Resistance to stable and unstable crack propagation was quantified via evaluation of load vs crack mouth opening displacement diagrams using Double-K fracture model. The AE technique was used to monitor damage process taking place during testing in specimens.

• Periodical: Solid State Phenomena (Volume 259)
• Pages: 58-63
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.259.58
• Online since: May 2017
• Authors: Hana Šimonová*, Libor Topolář, Ivana Havlíková, Michal Matysík, Petr Daněk, Zbyněk Keršner
• Keywords: Acoustic Emission, Concrete, Double-K Model, Fracture Test

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