Effect of the non-linear membrane potential on the migration of ionic species in concrete

Marriaga, Juan Lizarazo; Claisse, Peter A.

doi:10.1016/j.electacta.2008.11.031

Cited by 23 publications

(8 citation statements)

References 16 publications

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“…These techniques are mainly focused on determination of the diffusion coefficient and the ingress profile of chloride over time. These studies use different description and theories such as Fick's law, Nernst-Planck equation [40], binding isotherms [6], moisture transport [17] and temperature variation [39,41]. On the other hand, the field methods are focused on measuring chloride in existing concrete for determining its durability and maintenance cycle.…”

Section: Measurement Techniques For Chloride Ingressmentioning

confidence: 99%

Non-destructive measurement of chloride ions concentration in concrete – A comparative analysis of limitations and prospects

Abbas

Pargar

Koleva

et al. 2018

Construction and Building Materials

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h i g h l i g h t s Measuring chloride is crucial for service life assessment of concrete structures. Measurement techniques mainly based on electrochemistry and electromagnetics. Based on the level of assessment different techniques have pro and cons. For existing structure assessment varies from visual to detailed lab investigation. Electrochemical sensor are suitable for installation in new structures.

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Section: Measurement Techniques For Chloride Ingressmentioning

confidence: 99%

Non-destructive measurement of chloride ions concentration in concrete – A comparative analysis of limitations and prospects

Abbas

Pargar

Koleva

et al. 2018

Construction and Building Materials

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“…1 represents, diffusion of chloride ions in concrete is also affected by the potential impact of membrane potential associated with coupled ionic transport as reported by many researchers [13,14]. The knowledge of membrane potential arising from interactions between all ions present when chloride ions naturally diffuse into the concrete is therefore vital to model the diffusion process with more precision.…”

Section: Chloride Transportmentioning

confidence: 94%

Transport Modeling of Chlorides with Binding in Concrete

et al. 2012

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Chloride-induced corrosion is one of the most revealing cause of deterioration leading to premature durability loss by structural concrete. Among mechanisms governing penetration of chloride ions into the concrete, ingress by simple diffusion is the most decisive one for concentration-driven transport. The use of Fick's law of diffusion of the second type does in general permit a modest preliminary analysis of the diffusive transport subject to certain constraints, primarily associated with stationary chloride diffusion coefficient hypothesis. A realistic critique to such analysis based on constant chloride diffusivity is however its total disregard of intrinsic chloride-binding capacity evidently exhibited by cement-based materials constituent to the concrete. Given that the chlorides are also partly free and partly bound in concrete, the significance of chloride binding for a more accurate service life analysis of the concrete is of practical concern. Moreover, the challenge raised by chloride binding against the invariant diffusivity assumption cannot also be ignored, because only free chlorides diffuse into and through the bulk concrete to thereafter directly pose corrosion risk. Since chloride transport in cementitious material such as concrete based on one or another chloride-binding mechanism may also be quite different, careful choice of chloride-binding model, consistent with the underlying phenomenological behavior, is critical for its implication to service life predictions. The aim of this study is therefore to examine the effect of chloride binding in terms of their isotherm formulations on time to corrosion activation resulting from transport of chloride ions in saturated concrete. Numerical analysis employing nonlinear finite element modeling techniques is used to account for null, linear and nonlinear chloride-binding formulations, including Langmuir and Freundlich representations for the nonlinear types, on the chloride transport problem. Results of the analysis, in view of experimental chloride-binding and penetration profile data mined from the literature, are presented to quantifiably underscore the effects that various binding parameters significantly have on onset of chloride-induced corrosion in relation to specific durability requirements.

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“…Meanwhile, apart from the externally applied potential, the different mobilities of different ionic species also lead to an internal electric field, which in turn affects the ingress process of chloride ions [11,19,20]. To examine the multi-species interactions in ionic transport process, finite element models have been developed based on Poisson-Nernst-Plank (PNP) equations.…”

Section: Introductionmentioning

confidence: 99%

“…To examine the multi-species interactions in ionic transport process, finite element models have been developed based on Poisson-Nernst-Plank (PNP) equations. Samson et al [21,22], Truc et al [23], Krabbenhoft et al [24], Marriaga et al [19], Johannesson et al [25,26], Paz-Garcia et al [27], and Guo et al [12] considered the cement/concrete as a homogenous medium and described the concentration profiles of each species and the distribution of electric field by using multi-species transport models. A series of multi-phases and multi-species models have been also implemented to reflect the heterogenous nature of concrete.…”

Section: Introductionmentioning

confidence: 99%

Modelling of multi-species transport in concrete under the action of external electric field: Influence of the overpotential at electrode–electrolyte interfaces

Mao

Li²,

Kim³

2022

Journal of Electroanalytical Chemistry

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Effect of the non-linear membrane potential on the migration of ionic species in concrete

Cited by 23 publications

References 16 publications

Non-destructive measurement of chloride ions concentration in concrete – A comparative analysis of limitations and prospects

Non-destructive measurement of chloride ions concentration in concrete – A comparative analysis of limitations and prospects

Transport Modeling of Chlorides with Binding in Concrete

Modelling of multi-species transport in concrete under the action of external electric field: Influence of the overpotential at electrode–electrolyte interfaces

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