BEHAVIOR OF THE CORROSION OF REINFORCED CONCRETE BEAMS IN PRESENCE OF NaCl AND Na2SO4 3.5 %

Authors

  • Demetrio Nieves Mendoza Grupo Corrosión Chihuahua (México)
  • Manuel Bustamante Vega Universidad Autónoma de Chihuahua (México)
  • Facundo Mauricio Almeraya Calderón Grupo Corrosión Chihuahua (México)
  • Jorge Uruchurtu Chavarin Centro de investigaciones de ingeniería y ciencias aplicadas CIICAp (México)
  • Citlalli Gaona Tiburcio Grupo Corrosión Chihuahua (México)
  • Alberto Martínez Villafañe Centro de Investigación en Materiales Avanzados, S.C. (México)

Keywords:

Corrosion, reinforced concrete, electrochemical noise, corrosion potential, corrosion rate

Abstract

This paper presents the results obtained for the behavior of corrosion in reinforced concrete beams, by resorting to measurements of corrosion potentials (ASTM C876) and Electrochemical Noise. These beams are exposed to moistened and drying cycles with 3.5 % sodium sulfate (Na2SO4) and sodium chloride (NaCl). The purpose was settle an alternative in the evaluation of the reinforced concrete structures, using the electrochemical noise technique that is not perturvative to the system in study, and it provides more information than Polarization Resistance technique that is the only that at the moment is applied in the evaluation of reinforced concrete structures using commercial instruments. The evaluation was affected in beams of 20 x 20x 80 cm., reinforced with bars of 3/8 and stirrups of ¼" to each 20 cm, which were divided in four areas of 20 cm each one, having two protected areas and two naked areas, this with the purpose of having very defined the susceptible areas to suffer corrosion. The corrosion potential, in most of the beams presented an uncertainty of the phenomenon of corrosion, for both means, in accordance with the approach of evaluation that stable ASTM C876 and the rate corrosion of the exposed beams in sodium chloride presented a degree of moderate corrosion. While the exposed beams in sodium sulfate had rate corrosion more high in some cases, changing moderate to a very high corrosion degree. This investigation allows to establish thermodynamics and kinetic corrosion parameters without altering the system steelconcrete. It is feasible carry out mensurations with the techniques used in structures in service (bridges, jetties, buildings, etc.).

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Author Biographies

Demetrio Nieves Mendoza, Grupo Corrosión Chihuahua (México)

Civil Engineer, Master in Engineering Transport Systems Doctorate Student in Material Science Vol. 18 N°2, año 2003, Revista Ingeniería de Construcción Advanced Materials Research Center Corrosion group Chihuahua México

Manuel Bustamante Vega, Universidad Autónoma de Chihuahua (México)

Civil Engineer Master Student in Engineering Transport Systems Chihuahua Autonomus University Cd. Universitaria Chihuahua, Mexico.

Facundo Mauricio Almeraya Calderón, Grupo Corrosión Chihuahua (México)

Metallurgy Engineer, Ph. D. Material Science Advanced Materials Research Center Corrosion group Chihuahua, México

Jorge Uruchurtu Chavarin, Centro de investigaciones de ingeniería y ciencias aplicadas CIICAp (México)

Electronic Engineer, Ph. D. In Corrosion Science Research Center of Applied Engineering and Sciences. CIICAp Cuernavaca, Mor. México.

Citlalli Gaona Tiburcio, Grupo Corrosión Chihuahua (México)

Metallurgy Engineer, Ph. D. Material Science Advanced Materials Research Center Corrosion group Chihuahua, México.

Alberto Martínez Villafañe, Centro de Investigación en Materiales Avanzados, S.C. (México)

Bechelor Science in Physics and Mathematics, Ph. D. In Corrosion Science Advanced Materials Research Center Corrosion group

Published

2003-08-30

How to Cite

Nieves Mendoza, D., Bustamante Vega, M., Almeraya Calderón, F. M., Uruchurtu Chavarin, J., Gaona Tiburcio, C., & Martínez Villafañe, A. (2003). BEHAVIOR OF THE CORROSION OF REINFORCED CONCRETE BEAMS IN PRESENCE OF NaCl AND Na2SO4 3.5 %. Revista Ingeniería De Construcción, 18(2), 98–107. Retrieved from https://revistaingenieriaconstruccion.uc.cl/index.php/ric/article/view/18063

Issue

Section

Original Research

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