Probabilistic durability assessment of concrete structures in marine environments: Reliability and sensitivity analysis

Yu, Bo; Ning, Chao‐Lie; Li, Bing

doi:10.1007/s13344-017-0008-3

Cited by 34 publications

(23 citation statements)

References 22 publications

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“…Corrosion modeling of reinforcing steel is one of the methods that has been gaining increasing interest in the last two decades [4,[26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41]. Modeling the corrosion process will allow the assessment of the current state of the existing RCS, improve the stability and help to extend the service life of RCS.…”

Section: Prediction Of the Service Life Of Rcsmentioning

confidence: 99%

Electrochemical Sensors for Monitoring the Corrosion Conditions of Reinforced Concrete Structures: A Review

Figueira¹

2017

Applied Sciences

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Several methods for corrosion monitoring of reinforced concrete structures (RCS) have been proposed in the last few decades. These systems may be used either in new, existing or repaired structures. The corrosion monitoring can be performed by different methodologies. These may or may not be destructive, use different degrees of complexity and cost, and provide information on the progression and kinetics of the corrosion phenomena. The destructive methods are limited to sampling. Therefore, these may not be representative of the whole structure, which is extremely important in RCS with large heterogeneities both in terms of materials used and in terms of the exposure environment. Within this context, non-destructive methods have been widely developed, which are intended to provide quick information about the entire structure. Ideally, these systems should be able to detect the corrosion state of the steel inside the concrete, the main causes of corrosion and the evolution of corrosion phenomena over time. This manuscript reviews and summarizes the actual state of the art and the main achievements in the field of electrochemical sensors based on non-destructive methods for corrosion monitoring of RCS in the last few years. The challenges and perspectives in this field will also be discussed.

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Section: Prediction Of the Service Life Of Rcsmentioning

confidence: 99%

Electrochemical Sensors for Monitoring the Corrosion Conditions of Reinforced Concrete Structures: A Review

Figueira¹

2017

Applied Sciences

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“…is could be achieved by experience, comparisons of similar projects, accelerated tests, or mathematical models, according to ACI [20]. Among all these methods, mathematical modeling is the most accepted one owing to its concision and accuracy [14,[20][21][22][23][24], and the uncertainty in deterioration process can also be considered using fuzzy theory [25] or well-developed reliability theory [26][27][28][29][30][31][32][33]. However, most of these researches focused on the corrosion initiation, without considering the following propagation stages and their links to the initiation of corrosion.…”

Section: Introductionmentioning

confidence: 99%

Service Life Prediction of Precast Concrete Structures Exposed to Chloride Environment

Zhang

Zeng

Fang³

et al. 2019

Advances in Civil Engineering

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Chloride-induced corrosion is widely accepted as one of the primary causes of premature deterioration for concrete structures in marine or deicing salt environment. For precast concrete (PC) structures, such durability problems may even be severer because defects in joint areas, e.g., cracks caused by grout shrinkage and improper construction, can accelerate chloride ion transportation process and may cause the interface shear failure when subjected to seismic load. By applying the path probability model (PPM) and reliability theory, a probabilistic framework was proposed to predict three limit states of PC structures, including corrosion initiation, serviceability limit state, and ultimate limit state. Using Monte Carlo simulation, a beam-to-column joint was further analyzed to illustrate the differences between PC structures and those cast in situ. The analysis indicates that corrosion initiation and serviceability limit state are sensitive to chloride diffusivity at connection area, and the higher pitting factor can significantly influence the bearing capacities of PC structures.

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“…Concrete structures in tidal zones (or splash zones) are prone to damage owing to various physical, chemical, and biological factors [1][2][3][4]. One of the main causes of damage in reinforced concrete structures is chloride intrusion, which usually leads to steel-bar corrosion and concrete cracks [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, the samples were soaked in water for 48 h. The weights of the samples at saturation were measured, and their porosities were calculated (Table 3). 4.…”

mentioning

confidence: 99%

Model for the Patterns of Salt-Spray-Induced Chloride Corrosion in Concretes under Coupling Action of Cyclic Loading and Salt Spray Corrosion

et al. 2019

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In this study, the patterns of chloride ion erosion of unsaturated concrete subjected to the coupling action of cyclic loading and salt spray corrosion were experimentally studied, and Fick’s Second Law was used to fit the variation patterns of chloride concentration to obtain the chloride diffusion coefficient. Accordingly, we have established a mathematical model that describes chloride transport in unsaturated concrete and accounts for the effects of gas flow, water migration, convection diffusion, and capillary action. This model is composed of three equations—the gas flow equation, the solution flow equation, and the solute convection–diffusion equation. The COMSOL numerical analysis software was subsequently used to obtain solutions for this model, based on parameters such as porosity and the chloride diffusion coefficient. Subsequently, the saturation, relative permeability, and the chloride ion concentration during the first corrosion cycle were analyzed. The numerical results were consistent with the experimental values and were therefore superior to the values obtained using Fick’s Second Law.

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Probabilistic durability assessment of concrete structures in marine environments: Reliability and sensitivity analysis

Cited by 34 publications

References 22 publications

Electrochemical Sensors for Monitoring the Corrosion Conditions of Reinforced Concrete Structures: A Review

Electrochemical Sensors for Monitoring the Corrosion Conditions of Reinforced Concrete Structures: A Review

Service Life Prediction of Precast Concrete Structures Exposed to Chloride Environment

Model for the Patterns of Salt-Spray-Induced Chloride Corrosion in Concretes under Coupling Action of Cyclic Loading and Salt Spray Corrosion

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