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Relation between resistivity of concrete and corrosion rate of reinforcing bars caused by galvanic cells in the presence of chloride.

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Title: Relation between resistivity of concrete and corrosion rate of reinforcing bars caused by galvanic cells in the presence of chloride.
Authors: Shevtsov, Dmitry S.1 (AUTHOR) shevtsov@chem.vsu.ru, Zartsyn, Iliya D.1 (AUTHOR), Komarova, Ekaterina S.1 (AUTHOR)
Source: Cement & Concrete Composites. May2021, Vol. 119, pN.PAG-N.PAG. 1p.
Subjects: Corrosion of reinforcing bars, Concrete corrosion, Electric batteries, Electrolytic corrosion, Moisture in concrete, Ohmic resistance
Abstract: The article presents the experimental study and theoretical analysis of the relationship between the resistivity of the concrete (ρ) and the reinforcement corrosion rate. The corrosion process was simulated using a galvanic sensor. The distance between the galvanic sensor plates and the sizes of the plates are selected in such a way as to simulate the functioning of microcells in the case of corrosion in the presence of chlorides. Tests carried out on bimetallic galvanic sensor embedded in mortar have corroborated a direct proportionality between the rate of corrosion and resistivity of concrete. The role of ohmic resistance in the corrosion process have been estimated by comparing model calculations and experimental results. The hypothesis of ohmic control the corrosion process in case of microcells was rule out. It was suggested that the process of corrosion is governed by the fraction of metallic surface wetted by porous liquid. A form of the equation for the current in a galvanic cell is proposed, taking into account the above model representations. The proposed approach can be used to simulate the corrosion process of reinforcement in concrete and to assess the effect of the saturation of concrete with moisture on the corrosion rate. [ABSTRACT FROM AUTHOR]
Copyright of Cement & Concrete Composites is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 149615360
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Relation between resistivity of concrete and corrosion rate of reinforcing bars caused by galvanic cells in the presence of chloride.
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  Data: <searchLink fieldCode="AR" term="%22Shevtsov%2C+Dmitry+S%2E%22">Shevtsov, Dmitry S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> shevtsov@chem.vsu.ru</i><br /><searchLink fieldCode="AR" term="%22Zartsyn%2C+Iliya+D%2E%22">Zartsyn, Iliya D.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Komarova%2C+Ekaterina+S%2E%22">Komarova, Ekaterina S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Cement+%26+Concrete+Composites%22">Cement & Concrete Composites</searchLink>. May2021, Vol. 119, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Corrosion+of+reinforcing+bars%22">Corrosion of reinforcing bars</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete+corrosion%22">Concrete corrosion</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+batteries%22">Electric batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Electrolytic+corrosion%22">Electrolytic corrosion</searchLink><br /><searchLink fieldCode="DE" term="%22Moisture+in+concrete%22">Moisture in concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Ohmic+resistance%22">Ohmic resistance</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The article presents the experimental study and theoretical analysis of the relationship between the resistivity of the concrete (ρ) and the reinforcement corrosion rate. The corrosion process was simulated using a galvanic sensor. The distance between the galvanic sensor plates and the sizes of the plates are selected in such a way as to simulate the functioning of microcells in the case of corrosion in the presence of chlorides. Tests carried out on bimetallic galvanic sensor embedded in mortar have corroborated a direct proportionality between the rate of corrosion and resistivity of concrete. The role of ohmic resistance in the corrosion process have been estimated by comparing model calculations and experimental results. The hypothesis of ohmic control the corrosion process in case of microcells was rule out. It was suggested that the process of corrosion is governed by the fraction of metallic surface wetted by porous liquid. A form of the equation for the current in a galvanic cell is proposed, taking into account the above model representations. The proposed approach can be used to simulate the corrosion process of reinforcement in concrete and to assess the effect of the saturation of concrete with moisture on the corrosion rate. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Cement & Concrete Composites is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.cemconcomp.2021.104026
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Corrosion of reinforcing bars
        Type: general
      – SubjectFull: Concrete corrosion
        Type: general
      – SubjectFull: Electric batteries
        Type: general
      – SubjectFull: Electrolytic corrosion
        Type: general
      – SubjectFull: Moisture in concrete
        Type: general
      – SubjectFull: Ohmic resistance
        Type: general
    Titles:
      – TitleFull: Relation between resistivity of concrete and corrosion rate of reinforcing bars caused by galvanic cells in the presence of chloride.
        Type: main
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            NameFull: Shevtsov, Dmitry S.
      – PersonEntity:
          Name:
            NameFull: Zartsyn, Iliya D.
      – PersonEntity:
          Name:
            NameFull: Komarova, Ekaterina S.
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          Dates:
            – D: 01
              M: 05
              Text: May2021
              Type: published
              Y: 2021
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              Value: 09589465
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              Value: 119
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            – TitleFull: Cement & Concrete Composites
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