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Proceedings Paper

Acoustic emission characterization of the onset of corrosion in reinforced concrete
Author(s): M. Di Benedetti; E. De Cais; Z. Karim; G. Loreto; F. Presuel; A. Nanni
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Paper Abstract

The development of techniques capable of evaluating deterioration of reinforced concrete (RC) is instrumental to the advancement of the structural health monitoring (SHM) and service life estimate for constructed facilities. One of the main causes leading to degradation of RC is the corrosion of the steel reinforcement. This process can be modeled phenomenologically, while laboratory tests aimed at studying durability responses are typically accelerated in order to provide useful results within a realistic period of time. Among nondestructive methods, acoustic emission (AE) is emerging as a tool to detect the onset and progression of deterioration mechanisms. In this paper, the development of accelerated corrosion and continuous AE monitoring test set-up for RC specimens are presented. Relevant information are provided with regard to the characteristics of the corrosion circuit, continuous measurement and acquisition of corrosion potential, selection of AE sensors and AE parameter setting. Results from small-scale pre-notched RC specimens aim to isolate the frequency spectrum where the corrosion first takes place. Waveform analysis critical in the definition of a prognosis model will extend the AE dataset for the onset of corrosion.

Paper Details

Date Published: 6 April 2012
PDF: 8 pages
Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 83453Y (6 April 2012); doi: 10.1117/12.915197
Show Author Affiliations
M. Di Benedetti, Univ. of Miami (United States)
E. De Cais, Univ. of Miami (United States)
Z. Karim, Univ. of Miami (United States)
G. Loreto, Univ. of Miami (United States)
F. Presuel, Florida Atlantic Univ. (United States)
A. Nanni, Univ. of Miami (United States)

Published in SPIE Proceedings Vol. 8345:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
Masayoshi Tomizuka; Chung-Bang Yun; Jerome P. Lynch, Editor(s)

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