Monitoring of corrosion processes in chloride contaminated mortar by X-ray tomography

Mathias Beck; Juergen Goebbels; Andreas Burkert

Vol. 18 No. 27 (2009)

Papers

Monitoring of corrosion processes in chloride contaminated mortar by X-ray tomography

Published 2011-05-05

Mathias Beck, Ph. D.
Juergen Goebbels, Ph. D.
Andreas Burkert, Ph. D.

Mathias Beck, Ph. D.
Federal Institute for Materials Research and Testing

Juergen Goebbels, Ph. D.
Federal Institute for Materials Research and Testing

Andreas Burkert, Ph. D.
Federal Institute for Materials Research and Testing

How to Cite

Beck, M., Goebbels, J., & Burkert, A. (2011). Monitoring of corrosion processes in chloride contaminated mortar by X-ray tomography. Revista Facultad de Ingeniería, 18(27). Retrieved from https://revistas.uptc.edu.co/index.php/ingenieria/article/view/1389

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Abstract

La corrosión del acero reforzado en concreto expuesto a
ambientes que contienen cloruro es un serio problema en la
práctica de la ingeniería civil. Los métodos electroquímicos,
vale decir, el mapeo potencial, suministra información acerca
de si el refuerzo todavía es pasivo o se ha iniciado la
despasivización. La aplicación de tales técnicas no suministra información sobre el tipo de corrosión, ni sobre la extensión y distribución del producto de la corrosión. Hasta hoy es imposible recopilar tal información sin destruir los
especímenes, luego de que la prueba electroquímica se lleva a cabo. Para superar este problema se trató de estudiar la superficie del acero dentro del mortero de los especímenes,mediante las tomografías con Rayos X (CT). En el marco de estas investigaciones se pudo mostrar, por primera vez, que la tomografía de rayos X es apropiada para hacer visible la corrosión de las barras de refuerzo empotradas en el mortero,con un recubrimiento de unos 20 milímetros. Posteriormente,secciones de las varillas empotradas formadas por las medidas del CT, fueron exitosamente comparadas con las secciones metalográficas.

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