accelerated simulation of chloride ingress into concrete

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Accelerated simulation of chloride ingress into concrete ...

Under natural and artificial simulated environments, the differences of chloride ingress into concrete are in terms of surface chloride content, convective zone depth, and diffusion coefficient. Numerical simulation indicates that the acceleration factor can be considered as a key parameter to determine the correlation of chloride ingress into ...

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Accelerated simulation of chloride ingress into concrete ...

Request PDF Accelerated simulation of chloride ingress into concrete under drying–wetting alternation condition chloride environment In this study, the chloride diffusion coefficient model ...

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DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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(PDF) Modelling of chloride ingress into concrete from a ...

Concrete exposed to cyclic wetting and drying in salty water conditions is thought to be subjected to an accelerated ingress of chloride from the outside environment, and prone to a worsening ...

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Meso-scale simulation of chloride ingress in cracked concrete

The ingress of chloride ions into concrete plays a crucial role in reinforcing bar corrosion and, hence, for the durability and life of a structure. The problem is more acute once cracking has ...

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Modelling of chloride ingress into concrete from a saline ...

2005-12-1  A mathematical model previously developed for the simulation of electrochemical chloride removal (ECR) process is utilised to predict the ionic mass transport associated with chloride ingress into concrete or hydrated cement paste from a saline environment by

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Numerical simulation of chloride penetration in concrete ...

2015-10-1  The influence of the exchange rate constant of chloride ions between the two pore volumes on the chloride transport is shown in Fig. 3, in which the adsorption/desorption of chloride ions between liquid and solid phases and the boundary-layer effect on the exposed surface are ignored.It can be seen from Fig. 3(a) that when a small exchange rate constant is used, the ionic exchange between the ...

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Entire Process Simulation of Corrosion due to the Ingress ...

A comprehensive mathematical model which can simulate the entire corrosion process of reinforcement in concrete is proposed in this paper. The combined effect of carbonation and chloride ingress is also discussed in the mass transport module. Nonuniform corrosion distribution is employed for the study of mechanical damage in concrete. The link of ABAQUS with MATLAB is adopted for the numerical ...

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An Accelerated Test Method of Simultaneous Carbonation

The effects of simultaneous carbonation and chloride ion attack on mechanical characteristics and durability of concrete containing silica fume have been investigated through an accelerated test method.

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(PDF) Modelling of chloride ingress into concrete from a ...

Concrete exposed to cyclic wetting and drying in salty water conditions is thought to be subjected to an accelerated ingress of chloride from the outside environment, and prone to a worsening ...

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(PDF) An Accelerated Test Method of Simultaneous ...

2016-5-17  An Accelerated Test Method of Simultaneous Carbonation and Chloride Ion Ingress: Durability of Silica Fume Concrete in Severe Environments May 2016 Advances in Materials Science and Engineering ...

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Meso-scale simulation of chloride ingress in cracked concrete

The ingress of chloride ions into concrete plays a crucial role in reinforcing bar corrosion and, hence, for the durability and life of a structure. The problem is more acute once cracking has ...

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Chloride ingress testing of concrete - figshare

2015-11-18  Concrete is recognised as a durable material that can provide long-term protection to embedded carbon steel reinforcement. However, effective protection can only be achieved if the mechanisms of deterioration and the durability properties of the protective material involved are fully understood. A well-known phenomenon is the ingress of chloride ions into concrete, which takes place

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EFFECT OF CARBONATION ON CHLORIDE PENETRATION

2020-3-3  Chloride ions ingress and carbonation, which start from concrete surface and progress toward internal concrete, can both lead to accelerated corrosion of steel bars in concrete. When chloride ions ingress and carbonation take place simultaneously in concrete, Third RILEM workshop on Testing and Modelling the Chloride Ingress into Concrete

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(PDF) The characterization of chloride effect on concrete ...

Concrete exposed to cyclic wetting and drying in salty water conditions is thought to be subjected to an accelerated ingress of chloride from the outside environment, and prone to a worsening ...

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A review of the chloride transport properties of cracked ...

2017-8-27  chloride ingress and hence the onset of corrosion (Djerbi et al., 2008). Therefore, in studies on the transport properties of concrete, cracks must be taken into account to reflect the practical working condition of reinforced concrete structures. Several studies have focused on the effect of cracks on the chloride transport properties of con-

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Computational results of a model for chloride ingress in ...

Over the past decades a considerable research effort has been attributed to the modelling of chloride ingress into reinforced concrete in order to predict its durability. Traditional models are based on the error-function. In the present paper computational results of an advanced model are presented, which takes environmental temperature and humidity fluctuations, chloride binding, diffusion ...

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An Accelerated Test Method of Simultaneous Carbonation

An Accelerated Test Method of Simultaneous Carbonation and Chloride Ion Ingress: Durability of Silica Fume Concrete in Severe Environments . By S. A. Ghahari, ... hindering CO2 from penetrating into the pores of the specimens. Moreover, the porosity analysis of the specimens showed that the sample containing silica fume cured in the tidal zone ...

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Interaction of carbonation and chloride ions ingress in ...

environment has no influence in the chloride ingress into the samples studied. Chengfang et al. [10] subjected OPC concrete specimens to carbonation chamber (20% CO2, 20ºC and 70% RH) for 14 and 28 days and after to immersion in 5% NaCl solution and drying in laboratory environment cycles to

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(PDF) An Accelerated Test Method of Simultaneous ...

The effects of simultaneous carbonation and chloride ion attack on mechanical characteristics and durability of concrete containing silica fume have been investigated through an accelerated test method. Specimens containing different amounts of

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Modelling Chloride Ingress into Concrete Part 1 - Background

2017-8-1  Hence it is surprising that while ingress of chloride into reinforced concrete is costing billions of dollars each year durable concreting is not a growth industry. Unfortunately this is not the case for publishing papers on concrete durability which is definitely a growth industry. The problem of chloride ingress

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The Simulation Experiment and the Similarity of Chloride ...

To obtain the similarity relationship between the simulation experiment and the field experiment of chloride ion erosion in the concrete under the marine environment, on the basis of chloride ion ingress concrete under the onsite marine environment in Zhou Shan, a series of field corrosion tests involving the chloride ion ingression in the costal tidal zone are carried out.

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EFFECT OF CARBONATION ON CHLORIDE PENETRATION

2020-3-3  Chloride ions ingress and carbonation, which start from concrete surface and progress toward internal concrete, can both lead to accelerated corrosion of steel bars in concrete. When chloride ions ingress and carbonation take place simultaneously in concrete, Third RILEM workshop on Testing and Modelling the Chloride Ingress into Concrete

Get price

An Accelerated Test Method of Simultaneous Carbonation

An Accelerated Test Method of Simultaneous Carbonation and Chloride Ion Ingress: Durability of Silica Fume Concrete in Severe Environments . By S. A. Ghahari, ... hindering CO2 from penetrating into the pores of the specimens. Moreover, the porosity analysis of the specimens showed that the sample containing silica fume cured in the tidal zone ...

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Prediction of Chloride Ions Ingress in ... - Concrete

2003-1-1  Date: 1/1/2003. Abstract: The ingress of chloride ions into concrete plays a crucial role in reinforcing bar corrosion and, hence, for the durability and life of a structure. The problem is more acute once cracking has occurred. This paper presents mathematical models and numerical simulations for water movement and chloride ions ingress by ...

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Computational results of a model for chloride ingress in ...

Over the past decades a considerable research effort has been attributed to the modelling of chloride ingress into reinforced concrete in order to predict its durability. Traditional models are based on the error-function. In the present paper computational results of an advanced model are presented, which takes environmental temperature and humidity fluctuations, chloride binding, diffusion ...

Get price

Impact of carbonation on the chloride diffusivity in ...

2019-12-12  chloride-contained salts on concrete structures while thecarbonationdevelopsallalong[5].Recently,some laboratory studies highlighted the consequence of this action through accelerated tests using alternating schemes of carbonation-chloride ingress and found the chlorides transport further into concrete [6–9]. K. Li () Y. Zhang

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Parameter identification in chloride ingress from ...

2021-6-19  ABSTRACT: Chloride ingress into concrete is one of the main causes leading to the degradation of reinforced concrete (RC) structures. Important damages due to chloride-attack are reported after 10-20 years and thus, structures should be inspected periodically to ensure optimal levels of serviceability and safety.

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A Bayesian Network framework for probabilistic ...

2021-7-29  Chloride ingress into concrete is one of the major causes leading to the degradation of reinforced concrete (RC) structures. RC structures are often designed for a service life from 50 to 100 years. Under chloride attack important damages are generated after 10 to 20 years. Consequently, they

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