Formation of incipient anodes in localized mortar repairs with the addition of rice husk silica

  • Igor Rossi Remenche Program of Graduate Studies in Civil Engineering, Federal University of Paraná (UFPR), Curitiba, Brazil.
  • Paulo Augusto Daschevi Court of Accounts of Paraná, Curitiba, Brazil.
  • Nikolai Franceschetto Holowka Program of Graduate Studies in Civil Engineering, Federal Technological University of Paraná (UTFPR), Curitiba, Brazil.Program of Graduate Studies in Civil Engineering, Federal Technological University of Paraná (UTFPR), Curitiba, Brazil.
  • Leonardo Caniato Martioli Program of Graduate Studies in Civil Engineering, Federal University of Paraná (UFPR), Curitiba, Brazil.
  • Marcelo Henrique Farias de Medeiros Program of Graduate Studies in Civil Engineering, Federal University of Paraná (UFPR), Curitiba, Brazil.
DOI: https://doi.org/10.21041/ra.v14i3.763
Keywords: incipient anode; electrochemical incompatibility; repair; corrosion potential; surface electrical resistivity

Abstract

The objective of this work was to investigate how incipient anodes can be detected and monitored in localized repair areas using mortars with added rice husk silica. Three repair conditions were tested on prismatic specimens: without repair, with repair without rice husk silica addition, and with rice husk silica addition in the mortar. Corrosion potential and electrical resistivity tests were conducted. The corrosion potential test showed no variation along the bar, while the electrical resistivity test showed varied values depending on the repaired and non-repaired zones. It was concluded that adding rice husk silica to the mortar made the corrosion potential more electronegative due to the greater difference in electrical resistivity compared to the substrate, contributing to the formation of incipient anodes.

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Published
2024-09-01
How to Cite
Remenche, I. R., Daschevi, P. A., Holowka, N. F., Martioli, L. C., & Farias de Medeiros, M. H. (2024). Formation of incipient anodes in localized mortar repairs with the addition of rice husk silica. Revista ALCONPAT, 14(3), 255 -. https://doi.org/10.21041/ra.v14i3.763
Issue
Vol. 14 No. 3 (2024): Volume 14, Issue 3 (2024)
Section
Basic Research

Copyright (c) 2024 Remenche, I. R., Daschevi, P. A., Holowka, N. F., Martiolli L. C., Medeiros, M. H. F.

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