Non contacting corrosion method applied to the steel corrosion rate determination in different solutions and reinforced concrete specimens.

Andrade Perdrix, María del Carmen and Martínez Sierra, Isabel (2010). Non contacting corrosion method applied to the steel corrosion rate determination in different solutions and reinforced concrete specimens.. In: "NACE 2010", 01/03/2010 - 01/03/2010, San Antonio, Texas, EEUU. pp. 1-2.

Description

Title: Non contacting corrosion method applied to the steel corrosion rate determination in different solutions and reinforced concrete specimens.
Author/s:
  • Andrade Perdrix, María del Carmen
  • Martínez Sierra, Isabel
Item Type: Presentation at Congress or Conference (Article)
Event Title: NACE 2010
Event Dates: 01/03/2010 - 01/03/2010
Event Location: San Antonio, Texas, EEUU
Title of Book: Proceedings of NACE 2010
Date: 2010
Subjects:
Freetext Keywords: corrosion, rate measurement, non-metallic contact.
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

All the current techniques used to measure the metallic corrosion require contact with the metal. Particularly, in the case of reinforcement corrosion, this signifies the need to reach the bar that is embedded in the concrete, which may consequently result in the disruption of the integrity of the real structures. This paper explores the feasibility of using a new method for polarizing the reinforcement or any metal in an electrolyte, without the need of direct contact with it. The polarization is obtained through the induction of current from an external electrical field. The current runs through the electrolyte and the metal in parallel, depending on the electrode arrangement. The resulting Polarization Resistance calculated is termed as Inductive, Rp = Rpi . The Inductive is calculated by the model of resistances in parallel, which requires a separate measurement of the electrolyte ohmic resistance. In this study, solutions with several resistivities and concrete specimens with and without chlorides have been used. The results indicate that electrolytes of low resistivity mask the measurement, and consequently, Rpi could not be calculated. In electrolytes with high resistivity, such as concrete, the feasibility is found to depend on the relative values of Re and Rpi

More information

Item ID: 9303
DC Identifier: http://oa.upm.es/9303/
OAI Identifier: oai:oa.upm.es:9303
Deposited by: Memoria Investigacion
Deposited on: 27 Oct 2011 09:49
Last Modified: 14 May 2020 08:35
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