A new way for determining the chloride diffusion coefficient in concrete from steady state migration test

Truc, Olivier; Ollivier, Jean‐Pierre; Carcassès, Myriam

doi:10.1016/s0008-8846(99)00232-x

Cited by 127 publications

(45 citation statements)

References 4 publications

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“…The test method is similar to NT BUILD 492 developed by tang [13] which was investigated by many authors [14]. The principle of the test consists of sandwiching concrete beam specimens between two electrolyte compartments.…”

Section: Accelerated Chloride Migration Testmentioning

confidence: 99%

Combined Effect of Initial Curing Temperature and Crack Width on Chloride Penetration in Reinforced Concrete Beams

et al. 2018

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Abstract. Reinforced concrete (RC) structures are gradually being degraded all over the world, largely due to corrosion of the embedded steel bars caused by an attack of chloride penetration. Initial curing would be regarded as one factor influencing chloride diffusion in concrete in combination with cover cracking that is also of great attention for reinforced structures. In this study, a non-steady state diffusion test of chloride ion involving RC beam specimens with a water-to-cement ratio of 0.5, initial curing temperatures of 5°C or 20°C and three types of crack widths ranging from 0 to 0.2mm was performed. Chloride content at 5°C or was determined. The results show that the higher chloride content was obtained in condition of crack width large than 0.1mm with low initial curing temperature and there are no obvious differences in chloride content when the crack width was not larger than 0.1mm.

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Section: Accelerated Chloride Migration Testmentioning

confidence: 99%

Combined Effect of Initial Curing Temperature and Crack Width on Chloride Penetration in Reinforced Concrete Beams

et al. 2018

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“…A similar test method is developed by AASHTO, known as salt ponding test [40]. Other accelerated methods make use of electrolysis processes: The important methods include LMDC [41], RMT [42], NT-Build-492 [15], RCPT [43].…”

Section: Chloride Diffusion Coefficientmentioning

confidence: 99%

Predictive Models of Chloride Penetration in concrete: An Overview

Khitab¹,

Anwar²,

Arshad³

2017

MUST J. Eng. and Appl. Sci.

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This article presents a brief review of the models aimed to predict the penetration of chloride ions in concrete. The work highlights the two well-known approaches i.e. Fick's laws and Nernst-Planck equation. Difference of opinion about the two approaches as well as within each approach is also elaborated. Diverse accelerated methods for determining the chloride diffusivity in concrete are also described. Different numerical schemes and analytical solutions as adapted in the models are also mentioned. Effort is made to present the models in a chronological way and therefore the presented list is not exhaustive.

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“…El núcleo del modelo [ec. [4][5][6][7] se desarrolló para calcular el coeficiente de difusividad tras haber medido el perfil In this model, the radial and axial flows have been assumed to be independent of one another and the following function [6]:…”

Section: Rmentioning

confidence: 99%

“…The core of the model [eq. [4][5][6][7] was developed to estimate the diffusion coefficient after measuring a profile of chloride concentration in [6] [9]…”

Section: Rmentioning

confidence: 99%

“…Es sabido que el tiempo requerido para determinar el coeficiente de difusividad se mide en meses o, incluso años, especialmente cuando se trata de materiales no porosos (2,3). Se han desarrollado varios procedimientos de ensayo acelerado que se basan en la inmersión en disoluciones salinas concentradas o en la aplicación de campos eléctricos externos que, sustituyendo la difusión por fenómenos de migración, aceleran el transporte iónico en la probeta (4)(5)(6)(7)(8)(9)(10). El método que se presenta en este artí-culo es un método de aceleración natural, ya que se basa principalmente en la forma geométrica de la probeta (cilíndrica), que permite un rápido incremento de la penetración de iones en ella.…”

Section: Introductionunclassified

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Cálculo del transporte de cloruros en la pasta de cemento

Princigallo¹

2012

Mater. construcc.

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A new way for determining the chloride diffusion coefficient in concrete from steady state migration test

Cited by 127 publications

References 4 publications

Combined Effect of Initial Curing Temperature and Crack Width on Chloride Penetration in Reinforced Concrete Beams

Combined Effect of Initial Curing Temperature and Crack Width on Chloride Penetration in Reinforced Concrete Beams

Predictive Models of Chloride Penetration in concrete: An Overview

Cálculo del transporte de cloruros en la pasta de cemento

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