Corrosion of Steel in Concrete - Modeling of Electrochemical Potential Measurement in 3D Geometry

• Autorzy: Filipek R. , Szyszkiewicz-Warzecha K. , Szczudło J.

Identyfikatory

DOI

10.24425/amm.2019.131104

• Języki publikacji: EN

Abstrakty

EN

The paper presents a 3D model and simulations of corroding reinforcement bars in a concrete element. Electric potential distributions are calculated in the concrete matrix and on its surface for two rebars arrangements with one or three active (anodic) sites to assess the reliability and identify possible problems when standard test measurements for corrosion assessment in concrete structures are used and conclusion on the corrosion state is inferred. The values of the potential strongly depend on a concrete layer thickness and beyond the threshold of 5-7 cm it is hardly possible to detect the number of active sites on the rebar. Also conductiv-ity – which is not constant in real world constructions – is an important factor. Thus without estimation of the state of concrete it is difficult to draw reliable conclusions on the corroding activity from shear potential measurements on the surface.

Słowa kluczowe

EN

reinforced concrete corrosion; 3D modelling; non-destructive testing

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 1
• Strony: 117--124
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wzory

Twórcy

autor

Filipek R.

• AGH Univeristy of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Szyszkiewicz-Warzecha K.

• AGH Univeristy of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Szczudło J.

• AGH Univeristy of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

• [1] S. Laurens, F. Deby, Electrochemical Methods (Chapter 5) in Nondestructive Testing and Evaluation of Civil Engineering Structures, eds. J. P. Balayssac and V. Garnier, ISTE Presss - Elsevier 2018.
• [2] J. Ožbolt, G. Balabanić, M. Kušter, Corr. Sci. 53, 4166-4177 (2011).
• [3] S. Laurens et al., Cem. Concr. Res. 79, 272-290 (2016).
• [4] N. Sato, Corr. J. 45 (5), 1989-368 (1989).
• [5] B. Elsener, Cem. Concr. Compos. 24, 65-72 (2002).
• [6] G. Qiao, J. Ou, Electrochim. Acta 52, 8008-8019 (2007).
• [7] T. E. Pou, O. J. Murphy, V. Young, J. O’M. Bockris, J. Electrochem. Soc. 131 (6), 1243-1251 (1984).
• [8] A. Neville, Mater. Struct. 28, 63-70 (1995).
• [9] V. Cicek, Corrosion Engineering, SP Wiley 2014.
• [10] N. Perez, Electrochemistry and Corrosion Science, 2nd ed., Springer (2016).
• [11] A. J. Bard, L. R. Faulkner, Electrochemical Methods: Fundamentals and Applications, 2nd ed., Wiley 2001.
• [12] A. Quarteroni, Numerical Models for Differential Problems, Springer-Verlag Italia, Milan 2009.

Uwagi

EN

1. This work was supported by the Polish National Centre for Research and Development Grant No. K1/IN1/25/153217/NCBiR/12, and Grant AGH No. 16.16.160.557.

PL

2 Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).