Publication detail

Acoustic Emission Method as a Diagnostic Tool for Corrosion Cracing in Reiforced Concrete Beams

Authors: Kořenská Marta | Pazedra Luboš | Pospíšil Karel | Manychová Monika

Year: 2004

Type of publication: článek ve sborníku

Name of source: Proceedings of 26th European Conference an Acoustic Emission Testing

Publisher name: Deutsche Gesellschaft für Zerstörungsfreie Prüfung

Place: Berlin

Page from-to: 959-965

Titles:

Language	Name	Abstract	Keywords
cze	Akustická emise jako nástroj pro nedestruktivní monitorování koroze výztuže železobetonových předpjatých nosníků		akustická emise; nedestruktivní; nosník; předpjatý; výztuž
eng	Acoustic Emission Method as a Diagnostic Tool for Corrosion Cracing in Reiforced Concrete Beams	The paper deals with acoustic emission evaluation of deterioration of reinforced concrete beams during flexural tests under repeated loadings. The beams were deteriorated due to accelerated corrosion of reinforcement. The tests demonstrated that acoustic emission is very sensitive to detect the initiation of tensile microcracks, main tensile cracks and internal cracks generated near the interface between the reinforcement and concrete. They were revealed that the deteriorated beams exhibit different acoustic emission behaviour, depending on the different damage levels induced by the corrosion of the reinforcement. acoustic emission parameter analysis showed that a Felicity ratio, the ratio of the load of onset of acoustic emission and the maximum prior load, is a very effective criterion to measure the severity of damage induced in the reinforced concrete beams. High acoustic emission activity during unloading was also shown to be an effective index to estimate the deterioration of reinforced concrete beams due to corrosion of reinforcement.	acoustic emission;nondestructive testing;NDT;reinforcement testing;

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