Simulation of the Ill-Posed Problem of Reinforced Concrete Corrosion Detection Using Boundary Element Method

Syarizal Fonna, Israr M. Ibrahim, M. Ridha, Syifaul Huzni, Ahmad Kamal Ariffin Mohd Ihsan

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Many studies have suggested that the corrosion detection of reinforced concrete (RC) based on electrical potential on concrete surface was an ill-posed problem, and thus it may present an inaccurate interpretation of corrosion. However, it is difficult to prove the ill-posed problem of the RC corrosion detection by experiment. One promising technique is using a numerical method. The objective of this study is to simulate the ill-posed problem of RC corrosion detection based on electrical potential on a concrete surface using the Boundary Element Method (BEM). BEM simulates electrical potential within a concrete domain. In order to simulate the electrical potential, the domain is assumed to be governed by Laplace's equation. The boundary conditions for the corrosion area and the noncorrosion area of rebar were selected from its polarization curve. A rectangular reinforced concrete model with a single rebar was chosen to be simulated using BEM. The numerical simulation results using BEM showed that the same electrical potential distribution on the concrete surface could be generated from different combinations of parameters. Corresponding to such a phenomenon, this problem can be categorized as an ill-posed problem since it has many solutions. Therefore, BEM successfully simulates the ill-posed problem of reinforced concrete corrosion detection.

Original languageEnglish
Article number6392702
JournalInternational Journal of Corrosion
Volume2016
DOIs
Publication statusPublished - 2016

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Boundary element method
Reinforced concrete
Corrosion
Concretes
Laplace equation
Numerical methods
Boundary conditions
Polarization
Computer simulation
Experiments

ASJC Scopus subject areas

  • Materials Science(all)
  • Process Chemistry and Technology

Cite this

Simulation of the Ill-Posed Problem of Reinforced Concrete Corrosion Detection Using Boundary Element Method. / Fonna, Syarizal; Ibrahim, Israr M.; Ridha, M.; Huzni, Syifaul; Mohd Ihsan, Ahmad Kamal Ariffin.

In: International Journal of Corrosion, Vol. 2016, 6392702, 2016.

Research output: Contribution to journalArticle

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