Numerical Modeling of Electrochemical Chloride Removal from Concrete

Sa'id-Shawqi, Q; Arya, Chanakya; Vassie, P R

doi:10.1016/s0008-8846(98)00002-7

Cited by 15 publications

(4 citation statements)

References 5 publications

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“…Different authors have tried to model the treatment and the whole process [8,10,18,19,21,39,[41][42][43][44], but it has not been still possible to find accurate model. Literature data from research and applications indicate that about 50% of the total chloride content can be removed [17,45].…”

Section: Introductionmentioning

confidence: 99%

Chloride Electroremediation in reinforced structures: preliminary electrochemical tests to detect the steel repassivation during the treatment

Martínez

Rozas

Ramos-Cillan

et al. 2015

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Chloride Electroremediation in reinforced structures: preliminary electrochemical tests to detect the steel repassivation during the treatment

Martínez

Rozas

Ramos-Cillan

et al. 2015

Electrochimica Acta

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“…Sa'id-Shawqi et al [122] used the Nernst-Planck and Laplace (potential and current distributions determination) equations to predict the amount of extracted chloride and the remaining chloride profile in a ECE treatment (voltage mode). The study solely considered free chloride removal from concrete.…”

Section: Modellingmentioning

confidence: 99%

The application of electrochemical chloride extraction to reinforced concrete – A review

Bouteiller

Tissier

Marie-Victoire

et al. 2022

Construction and Building Materials

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“…In the chloride extraction model-similarly in works (Andrade et al 1995;Sa'Id-Shawqi et al 1998;Castellotte et al 1999Castellotte et al , 2000-it is assumed that migration of ions under the influence of an electric field is the most important mechanism.…”

Section: Description Of the Process And Model Simplificationsmentioning

confidence: 99%

“…On the basis of Nernst-Planck and Nerst-Eistein equations the theoretical model which describes the jet of ion mass in an electrolyte solution was created (Andrade et al 1995;Sa'Id-Shawqi et al 1998;Castellotte et al 1999Castellotte et al , 2000. These equations are correct in a diluted solution and determine the flow of only one component.…”

mentioning

confidence: 99%

Application of thermomechanics equations in describing chloride extraction from concrete

Ali

Zybura

2007

Transp Porous Med

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During the extraction of chlorides from concrete there occur processes involving transfer of mass and electric charge via pore solution components. On the basis of the relations which exist between the concentrations of these components, the electric field intensity, the temperature, and the mechanical stress, thermomechanics equations of a multicomponent medium have been used for analytical description. On the basis of equations for the balance of mass, electric charge, momentum, energy and entropy inequality, equations of ion flows have been determined, which are justified in the general effect of the electric field action on the concrete covering. The occurrence of processes which are recognised as dominant ones during the chloride extraction has allowed us to significantly simplify the equations and reduce them to formulas permitting a practical use. By approximating the electrochemical potentials of the leading ions via the linear function of concentration and electric field potential, a flow equation has been determined which has a shape similar to the classical diffusion equation. In order to define the electrodiffusion coefficient occurring in this equation an inverse problem has been formulated and then numerical values of this coefficient have been evaluated using the results of experimental tests.

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Numerical Modeling of Electrochemical Chloride Removal from Concrete

Cited by 15 publications

References 5 publications

Chloride Electroremediation in reinforced structures: preliminary electrochemical tests to detect the steel repassivation during the treatment

Chloride Electroremediation in reinforced structures: preliminary electrochemical tests to detect the steel repassivation during the treatment

The application of electrochemical chloride extraction to reinforced concrete – A review

Application of thermomechanics equations in describing chloride extraction from concrete

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