Model of chloride penetration into cracked concrete subject to drying–wetting cycles

Ye, Hailong; Jin, Nanguo; Jin, Xianyu; Fu, Chuanqing

doi:10.1016/j.conbuildmat.2012.05.027

Cited by 146 publications

(61 citation statements)

References 19 publications

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“…of concrete); D cl is the chloride diffusion coefficient (m 2 /s); w is the mass of water per unit volume of concrete; μ is a unit conversion factor for converting the unit of the second term in the right-hand side of Equation (1) (Ye, Jin, Jin, & Fu, 2012). Thus, for the inner concrete starting from the end of surface convention zone, diffusion is the dominant mechanism to drive chloride transport in concrete.…”

Section: Modeling Of Chloride Transport In Sound Concrete With Dryingmentioning

confidence: 99%

Effect of Transverse Crack on Chloride Penetration into Concrete Subjected to Drying–Wetting Cycles

Lu¹,

Gao²,

Liu³

2014

Proceedings of the 4th International Conference on the Durability of Concrete Structures

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In this paper, several transversely cracked RC beams, self-anchored in a three-point bending mode, were prepared and subjected to NaCl solution drying-wetting cycles. Based on two experimental results obtained after 15 and 30 cycles, respectively, the profiles of free chloride concentration at different sections of sound and cracked concretes were presented and analyzed. The depth of surface convection zone in cracked concretes subject to chloride drying-wetting cycles is about 10-20 mm, which may increase gradually with the increasing of crack width. Then, it can be found that the speed of chloride penetration in concrete will be increased by cracks. Based on the equivalent diffusion model proposed in this paper, the apparent chloride diffusion coefficients for all sound and cracked sections were calculated. It can be found from the fitting precision that the equivalent diffusion model is suitable for analyzing the chloride penetration in flexural cracked concrete when its surface crack width is less than 0.3 mm. Furthermore, the relationship between crack width and equivalent diffusion coefficient can be described with quadratic function of crack effect.

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Section: Modeling Of Chloride Transport In Sound Concrete With Dryingmentioning

confidence: 99%

Effect of Transverse Crack on Chloride Penetration into Concrete Subjected to Drying–Wetting Cycles

Lu¹,

Gao²,

Liu³

2014

Proceedings of the 4th International Conference on the Durability of Concrete Structures

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“…However, depending on the exposure condition, the members of marine structures are typically exposed to four different types of chloride-bearing environments: submerged zone, tidal zone, splash zone, and atmospheric zone. Among these, tidal and splash zones were recognized to be the most unfavorable condition for marine structure since it accelerates the chloride ingress and corrosion [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Relationship among Water Sorptivity, Pore Characteristics, and Salt Concentration in Concrete

Jin

Jin³

et al. 2017

Period. Polytech. Civil Eng.

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“…In urban areas the carbonation process is the most common. On coastal regions the main aggressors are chlorides, sulfates and humidity (Merchers et al, 2009;Ye et al, 2012;Zirou et al, 2007). However, CO2 is becoming increasingly present in deterioration of concrete at southeastern Mexico (Solis et al, 2005;Moreno et al, 2004;CastroBorges et al, 2013;Castro et al, 2000b).…”

Section: Introductionmentioning

confidence: 99%

Analysis of the concrete-steel interface exposed to the outdoor environment and immersed in natural seawater

Sosa

Pérez

Moo-Yam

et al. 2018

Revista de la Asociación Latinoamericana de Control de Calidad,

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The electrochemical behavior in reinforced concrete structures with and without sodium chloride (NaCl) in the mixing water in a marine / tropical environment was evaluated. The monitoring consisted of measuring the corrosion potential (Ecorr), the advance of carbonation front (xCO2) and a photographic record of the concrete / steel interface at different stages of the period of time of exposure. In the exposure to the weather, the addition of NaCl to the mixing water favored the advance of carbonation. The presence of chlorides was a determining factor at the beginning and development of the corrosion process in both exposures to the weather and immersion. Keywords: reinforced concrete; carbonation; corrosion potential; concrete-steel interface, chloride ion. Análisis de la interfaz concreto-acero de especímenes expuestos a la intemperie y sumergidos en agua de mar natural RESUMEN Se evaluó el comportamiento electroquímico en estructuras de concreto armado sin y con adición de cloruro de sodio (NaCl) en el agua de amasado en un ambiente marino/tropical. El monitoreo consistió en medir el potencial de corrosión (Ecorr), avance del frente de carbonatación (xCO2) y registro fotográfico de la interfase concreto/acero en diferentes etapas del periodo de exposición. En la exposición a la intemperie se observó que la adición de iones cloruro favoreció el avance de la carbonatación. La presencia de iones cloruro es determinante en el inicio y desarrollo del proceso de corrosión, tanto en exposición a la intemperie como en inmersión.

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Model of chloride penetration into cracked concrete subject to drying–wetting cycles

Cited by 146 publications

References 19 publications

Effect of Transverse Crack on Chloride Penetration into Concrete Subjected to Drying–Wetting Cycles

Effect of Transverse Crack on Chloride Penetration into Concrete Subjected to Drying–Wetting Cycles

An Experimental Study on Relationship among Water Sorptivity, Pore Characteristics, and Salt Concentration in Concrete

Analysis of the concrete-steel interface exposed to the outdoor environment and immersed in natural seawater

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