Modeling the Time-to-Corrosion Cracking of Reinforced Concrete Structures by Finite Element

Castorena, José H.; Almeraya-Calderón, Facundo; Velasquez, José; Gaona-Tiburcio, C.; Cárdenas, Antonio; Barrios-Durstewitz, C.P.; León, L. Lopez; Martínez‐Villafañe, A.

doi:10.5006/1.3278495

Cited by 8 publications

(3 citation statements)

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“…The modeling of corrosion products is established based on different levels of corrosion. Basically, corrosion does not only reduce the cross section but also increase the thickness of corrosion layer at the interfacial zone between concrete and steel [11]. Figure 5 illustrates the geometrical characteristics of concrete, steel bar and corrosion products.…”

Section: Modelling Of Rust Elementsmentioning

confidence: 99%

Effect of Chloride and Corrosion of Reinforcing Steel on Thermal Behavior of Concrete and Its Modeling

Im¹,

Sancharoen²,

Julnipitawong³

et al. 2018

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Chloride induced corrosion of reinforcing steel is a significant problem. Thermograph is one of the Non-Destructive Testing methods which may be useful for detecting corroded bar in reinforced concrete. This study aims to investigate the thermal behavior of concrete influenced by chloride and corrosion of reinforcing steel. The results of this thermal behavior are useful for determining the detectability of corrosion by thermograph. Different mix proportions of concrete and level of corrosion were studied. The results of temperature profiles obtained from experimental work proved that when there is presence of dense rust confined between concrete and steel, thermal behavior of concrete around steel bar changed. When applying heat source on top surface of the specimen, there was a slight change of temperature on top of corroded bar while there was more signification change of temperature below it. This is because dense rust with low porosity is a better heat conductor when compared to concrete. The temperature history obtained from simulation and experiment are in a good agreement. Numerical simulation provides quite good results in the area closing to the concrete top surface (depth 0.5cm and 1.5cm) and the accuracy of the estimated temperature is within 2%-5% of the experimental results.

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Section: Modelling Of Rust Elementsmentioning

confidence: 99%

Effect of Chloride and Corrosion of Reinforcing Steel on Thermal Behavior of Concrete and Its Modeling

Im¹,

Sancharoen²,

Julnipitawong³

et al. 2018

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show abstract

“…It should be noted that Eq. (6) has been used for experimental results other than those used for the comparing of the model (Castorena et al, 2008), and the use of Eq. 6is applicable to situations where the concrete might be confined by compressive stress fields or stirrups/ties.…”

Section: Iron and Iron Oxide Phasementioning

confidence: 99%

Predicción del agrietamiento inducido por corrosión en hormigón armado mediante modelización por elementos finitos

et al. 2019

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Este trabajo propone un método de elementos finitos (FE) para calcular la profundidad de penetración por corrosión (rcrit) en las armaduras de acero, necesaria para originar la aparición de la primera grieta visible en el recubrimiento de hormigón. El análisis por FE se ha llevado a cabo utilizando el programa comercial ANSYS. El método de FE obtenido se ha desarrollado en función del espesor del recubrimiento de hormigón libre (C), el diámetro de la armadura (D), la longitud de la zona anódica (L), y el tipo de hormigón. Los resultados obtenidos muestran una gran influencia de la corrosión localizada (pequeñas zonas anódicas frente a grandes zonas catódicas) en la predicción del valor de rcrit. Esta influencia sólo puede ser analizada tridimensionalmente. El modelo de FE propuesto se validó utilizando datos de la bibliografía. La originalidad del procedimiento propuesto radica en la consideración de la dirección longitudinal en el análisis, para tener en cuenta la extensión de la zona anódica. El tipo de corrosión tiene una gran dependencia de la relación entre C/L, ocasionando corrosión uniforme para valores entre 0,02 < C/L < 0,1, y originando corrosión localizada para valores entre 0,5 < C/L < 4,0.

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“…Several studies have been published concerning the problems related to the corrosion-induced cover cracking time. These studies include experimental studies (Andrade, Alonso, and Molina 1993;Vu, Stewart, and Mullard 2005;Lu, Jin, and Liu 2011;Mullard and Stewart 2011;Ye et al 2018;Chen, Baji, and Li 2018;Wang et al 2020), theoretical analyses (El Maaddawy and Soudki 2007;Lu, Jin, and Liu 2011;Mullard and Stewart 2011;Malumbela, Alexander, and Moyo 2011), and numerical models (Castorena et al 2008;Xiao, Ying, and Shen 2012;Chernin and Val 2011;Srubar 2015;Stambaugh, Bergman, and Srubar 2018). Nevertheless, all these published studies have focused only on round-rebars, while square-rebars have been ignored.…”

Section: Introductionmentioning

confidence: 99%

Square-rebar corrosion-induced cover cracking and its time prediction for historical reinforced concrete buildings in China

Jin

Chun

Hua

et al. 2021

Journal of Asian Architecture and Building Engineering

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Square-rebars have been used in many historical reinforced concrete buildings worldwide. The durability and structural behavior of such historical buildings should be evaluated regularly and accurately. The prediction of the corrosion-induced cracking time is a critical element for the durability evaluation work. This study demonstrates a mathematical model for the corrosion-induced cover cracking for square-rebars and its time prediction method. The research methodology includes theoretical derivation and experimental validation. First, a simplified model that describes the corrosion-induced cover cracking for square-rebars is proposed, and then, Faraday's law is combined with the model to develop a time prediction model for corrosion-induced cover cracking. Finally, an accelerated corrosion experiment for squarerebars is performed to validate the applicability and accuracy of the prediction model.

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Modeling the Time-to-Corrosion Cracking of Reinforced Concrete Structures by Finite Element

Cited by 8 publications

References 0 publications

Effect of Chloride and Corrosion of Reinforcing Steel on Thermal Behavior of Concrete and Its Modeling

Effect of Chloride and Corrosion of Reinforcing Steel on Thermal Behavior of Concrete and Its Modeling

Predicción del agrietamiento inducido por corrosión en hormigón armado mediante modelización por elementos finitos

Square-rebar corrosion-induced cover cracking and its time prediction for historical reinforced concrete buildings in China

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