Modeling of chloride ions penetration in cracked concrete

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Modeling of chloride ions penetration in cracked concrete ...

2018-6-11  Penetration of chloride ions into concrete is one of the factors that can contribute to corrosion of rebar and consequently the strength of concrete structures as well as serviceability reduction. In this study, an experimental model was proposed to predict penetration of chloride ions into cracked concrete by performing non-destructive tests.

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Modeling of chloride ions penetration in cracked concrete ...

2018-6-11  Penetration of chloride ions into concrete is one of the factors that can contribute to corrosion of rebar and consequently the strength of concrete structures as well as serviceability reduction. In this study, an experimental model was proposed to predict penetration of chloride ions into cracked concrete by performing non‐destructive tests.

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Model of chloride penetration into cracked concrete ...

2012-11-1  Modeling of chloride penetrate in the cracked zone In the real environment, concrete structures always have cracks, which make moisture dissolved with chloride more easily penetrates and reaches the reinforcing steel and speeds up the initiation of steel corrosion especially in cyclic drying–wetting conditions.

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Modeling of chloride ions penetration in cracked concrete ...

Penetration of chloride ions into concrete is one of the factors that can contribute to corrosion of rebar and consequently the strength of concrete structures as well as serviceability reduction.

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Modeling of Chloride Ions Diffusion in Cracked Concrete ...

2012-4-26  And a FEM analysis on chloride diffusion in cracked concrete was performed with the new model in ANSYS. A good agreement can be found in comparison the numerical solution with test results. It proves that the new mathematic model is within a good accuracy in predicting the chloride diffusion depth in cracked concrete.

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(PDF) Modeling of Chloride Ions Diffusion in Cracked Concrete

The diffusion of chloride ions in reinforced concrete (RC) varies in space and time, depending on many uncertain factors as material properties, temperature, aging, humidity and external loadings.

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Modeling of Chloride Transport in Cracked Concrete: a 3-D ...

Modeling of Chloride Transport in Cracked Concrete: a 3-D Image–Based Microstructure Simulation. The prediction of concrete materials service life is not easy, because the complex heterogeneous microstructure and the random nature of concrete materials. Study the presence of cracks in concrete and their effect on coupled reaction and ...

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Modeling of Chloride Transport in Cracked Concrete: a 3-D ...

Modeling of Chloride Transport in Cracked Concrete: a 3-D Image–Based Microstructure Simulation. ... Cracks with different widths and depths will reduce the cover thickness and accelerate the migration of chloride ions. So, it’s highly desirable to develop a model to predict the chloride diffusion depth in cracked concrete while considering ...

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Lattice modeling of chloride diffusion in sound and ...

2013-9-1  In the following, a three dimensional lattice model for simulating chloride penetration in sound and cracked concrete is presented. Governing equations and discretization procedure are addressed. The focus of the paper lies on determination of transport properties of different phases in concrete (aggregate, mortar, and the interface), and cracks.

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(PDF) Modeling of Chloride Transport in Cracked Concrete ...

Cracks with different widths and depths will reduce the cover thickness and accelerate the migration of chloride ions. So, it's highly desirable to develop a model to predict the chloride diffusion...

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Model of chloride penetration into cracked concrete ...

The transporting mechanism of chloride ions in porous medium is supposed still valid for cracked concrete. The advection part is simulated by moisture transport in rough cracks, modeled as a flux based on Poiseuille law considering crack width, crack surface roughness, tortuosity and capillary pores at crack

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Modeling of Chloride Transport in Cracked Concrete: a 3-D ...

Modeling of Chloride Transport in Cracked Concrete: a 3-D Image–Based Microstructure Simulation. The prediction of concrete materials service life is not easy, because the complex heterogeneous microstructure and the random nature of concrete materials. Study the presence of cracks in concrete

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Modeling of Chloride Transport in Cracked Concrete: a 3-D ...

Modeling of Chloride Transport in Cracked Concrete: a 3-D Image–Based Microstructure Simulation. ... Cracks with different widths and depths will reduce the cover thickness and accelerate the migration of chloride ions. So, it’s highly desirable to develop a model to predict the chloride diffusion depth in cracked concrete while considering ...

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A Simple Approach to Modeling Chloride Diffusion into ...

2015-5-5  Up to now, several models of chloride ingress into concrete and cracked concrete have been proposed to simulate the chloride penetration. In the present paper, besides crack widths, crack depths were recognized as a key parameter affecting the chloride penetration depth. A short – term test of chloride diffusion was used to evaluate the influence of crack depths on the chloride penetration ...

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(PDF) Modeling of Chloride Transport in Cracked Concrete ...

Modeling of Chloride Transport in Cracked Concrete: A 3-D Image-Based Microstructure Simulation ... the cover thickness and accelerate the migration of chloride ions. So, it's highly desirable to ...

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Modeling of Chloride Transport in Cracked Concrete: A

2012-11-9  Modeling of Chloride Transport in Cracked Concrete: A 3D Image-Based Microstructure Simulation Y. Lu1, Edward Garboczi1, Dale Bentz1 1National Institute of Standards and Technology, Gaithersburg, MD, USA Abstract The prediction of concrete materials service life is not easy, because the complex heterogeneous

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Modeling the Diffusion of Chloride Ion in Concrete Using ...

Modeling of Chloride Ions Diffusion in Cracked Concrete Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments April 2012 Advances in Modeling of Rilem Tc-178 ''Testing and Modeling Chloride Penetration in Concrete''

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Modeling of the corrosion-induced crack in concrete ...

2020-10-20  Chloride-induced steel corrosion is one of the main reasons for the deterioration of reinforced concrete (RC) structures. Corrosion of steel bars not only reduces the bonding performance between steel and concrete [1,2] but also causes concrete cracking owing to rust expansion pressure [, ].In addition, as most RC structures are often subjected to the external loading, different patterns of ...

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Modeling of Chloride Transport in Cracked Concrete: A 3

2012-11-9  Modeling of Chloride Transport in Cracked Concrete: A 3-D Image– based Microstructure Simulation Yang Lu*1, Edward Garboczi2, Dale Bentz3, Jeffrey Davis4 1,2,3,4 National Institute of Standards and Technology *Corresponding author: Engineering Laboratory, National Institute of Standards and Technology, 100 Bureau Drive

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Chloride diffusivity in flexural cracked Portland cement ...

2014-9-6  In order to examine the effect of load-induced transverse cracks on the chloride penetration in flexural concrete beams, two different concretes, Portland cement concrete (PCC) and fly ash concrete (FAC), were tested with various crack widths. Total 14 reinforced concrete (RC) beams, ten of which were self-anchored in a three-point bending mode, were immersed into a 5% NaCl solution with the ...

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Modeling chloride transport in cracked concrete: a 3 D ...

2013-1-7  Modeling chloride transport in cracked concrete: a 3-D image–based microstructure simulation Yang Lu1, Edward Garboczi2, Dale Bentz3, and Jeffrey Davis4 Abstract The prediction of the service life of concrete materials is difficult, mainly because of their

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Modeling of Chloride Transport in Cracked Concrete: a 3-D ...

Modeling of Chloride Transport in Cracked Concrete: a 3-D Image–Based Microstructure Simulation. The prediction of concrete materials service life is not easy, because the complex heterogeneous microstructure and the random nature of concrete materials. Study the presence of cracks in concrete and their effect on coupled reaction and ...

Get price

Modeling of Chloride Transport in Cracked Concrete: a 3-D ...

Modeling of Chloride Transport in Cracked Concrete: a 3-D Image–Based Microstructure Simulation. ... Cracks with different widths and depths will reduce the cover thickness and accelerate the migration of chloride ions. So, it’s highly desirable to develop a model to predict the chloride diffusion depth in cracked concrete while considering ...

Get price

Modeling the Diffusion of Chloride Ion in Concrete Using ...

Modeling of Chloride Ions Diffusion in Cracked Concrete Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments April 2012 Advances in Modeling of Rilem Tc-178 ''Testing and Modeling Chloride Penetration in Concrete''

Get price

Modeling of Chloride Transport in Cracked Concrete: A

2012-11-9  Modeling of Chloride Transport in Cracked Concrete: A 3D Image-Based Microstructure Simulation Y. Lu1, Edward Garboczi1, Dale Bentz1 1National Institute of Standards and Technology, Gaithersburg, MD, USA Abstract The prediction of concrete materials service life is not easy, because the complex heterogeneous

Get price

Modeling of Chloride Transport in Cracked Concrete: A 3

2012-11-9  Modeling of Chloride Transport in Cracked Concrete: A 3-D Image– based Microstructure Simulation Yang Lu*1, Edward Garboczi2, Dale Bentz3, Jeffrey Davis4 1,2,3,4 National Institute of Standards and Technology *Corresponding author: Engineering Laboratory, National Institute of Standards and Technology, 100 Bureau Drive

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[PDF] Modeling of Chloride Transport in Cracked Concrete ...

The prediction of concrete materials service life is not easy, because the complex heterogeneous microstructure and the random nature of concrete materials. Study the presence of cracks in concrete and their effect on coupled reaction and transport are of great interest in civil engineering. Cracks with different widths and depths will reduce the cover thickness and accelerate the migration of ...

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Simulation of Chloride Diffusion in Cracked Concrete with ...

Effect of crack number on chloride penetration is shown in Figure 6. Figure 6 (a) shows geometry model. Crack width is 0.3 mm, crack depth is 10 mm, the distance between two cracks is 10 mm, and exposure period is 20 weeks. Figure 6 (b) shows the meshing of cracked concrete with two equal-width cracks.

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of Cracked Concrete - ResearchGate

analytical model to estimate chloride ion penetration in cracked concrete. Additionally, Jang et al. [34] determined the threshold crack width that would cause a sudden increase of chloride ...

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Chloride diffusivity in flexural cracked Portland cement ...

2014-9-6  In order to examine the effect of load-induced transverse cracks on the chloride penetration in flexural concrete beams, two different concretes, Portland cement concrete (PCC) and fly ash concrete (FAC), were tested with various crack widths. Total 14 reinforced concrete (RC) beams, ten of which were self-anchored in a three-point bending mode, were immersed into a 5% NaCl solution with the ...

Get price
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