Acoustic emission behavior of two layered, reinforced concrete slabs under bending

Title: Acoustic emission behavior of two layered, reinforced concrete slabs under bending
Author(s): D.G. Aggelis, S. Momoki, T. Shiotani, A. Hirama
Paper category : conference
Book title: RILEM Symposium on On Site Assessment of Concrete, Masonry and Timber Structures - SACoMaTiS 2008
Editor(s): L. Binda, M. di Prisco, R. Felicetti
Print-ISBN: 978-2-35158-061-5
e-ISBN: 978-2-35158-075-2
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 119 - 126
Total Pages: 8
Nb references: 20
Language: English

Abstract: The Acoustic Emission technique (AE) is popular for real time damage detection in concrete. It uses stress waves emerging from nucleation and propagation of cracks, recorded by suitable sensors on the surface of the material. In the present study, AE is used to monitor the deterioration progress of reinforced concrete beams under four point bending in a laboratory test. The specimens consist of two layers of plain and fibre concrete. At different loading steps, pulse velocity measurements were also conducted in order to obtain the transient three dimensional tomographic reconstruction of the interior. The AE sources location, is in remarkable agreement with the velocity structure visualization and the results are confirmed by the visual observation of the actual cracks developed. The results show that the AE technique is a valuable tool to study the failure mechanism of concrete.

Online publication: 2009-05-26
Publication type : full_text
Public price (Euros): 0.00