Assessment of reinforcement corrosion and concrete damage on bridges using non-destructive testing

doi:10.14256/jce.2724.2019

Cited by 10 publications

(32 citation statements)

References 44 publications

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“…If an appropriate track drainage is not provided for and the rail comes into contact with water lingering on the track, the rail corrosion will be even more pronounced [32]. In the case of the on-street running track (Figure 3), the corrosion rate and conductivity of stray currents will be enhanced through the action of deicing salt that is used to treat road surfaces in the following cases: when pavement is wet and air temperature is below 0°C, immediately prior to the start of snowfall, when "ice rain" is expected and when adhesion to pavement is reduced [33]. Sodium chloride and calcium chloride, without sand or fine gravel, are used as deicing salt [33].…”

Section: Examples Of Corrosion Damage On Railsmentioning

confidence: 99%

“…In the case of the on-street running track (Figure 3), the corrosion rate and conductivity of stray currents will be enhanced through the action of deicing salt that is used to treat road surfaces in the following cases: when pavement is wet and air temperature is below 0°C, immediately prior to the start of snowfall, when "ice rain" is expected and when adhesion to pavement is reduced [33]. Sodium chloride and calcium chloride, without sand or fine gravel, are used as deicing salt [33]. These chlorides dissolve in water and reach track structure very easily [21].…”

Section: Examples Of Corrosion Damage On Railsmentioning

confidence: 99%

“…In modern railway systems, the measures used to reduce the effects of stray currents at the source can be divided according to the following two groups of parameters that define the level of stray currents [17,33]:…”

Section: Parameters That Define Quantity Of Stray Currents On Rail Tracksmentioning

confidence: 99%

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Corrosion and stray currents at urban track infrastructure

2020

JCE

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Corrosion and stray currents at urban track infrastructureRails are a part of track structure where corrosion process inevitably occurs, except if they are fully insulated and devoid of contact with any other part of the structure (sleepers, fastening accessories) or electrolyte like moist soil or water in track structure. Corrosion occurs much faster in the presence of stray currents, which very soon results in the loss of material at the rail foot. The paper presents an overview and description of parameters influencing stray current levels, such as electrical potential in rail and longitudinal rail conductivity, rail-to-earth electrical resistance, electrical conductivity of load-bearing concrete layers of truck structure, and electrical conductivity of soil.

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Section: Examples Of Corrosion Damage On Railsmentioning

confidence: 99%

Section: Examples Of Corrosion Damage On Railsmentioning

confidence: 99%

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Corrosion and stray currents at urban track infrastructure

2020

JCE

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“…Usually, a routinary inspection consists of a visual test looking for rust or cracks in the structure, which could not give an accurate measurement of corrosion and its level inside the structure. On Marić et al (2019), authors present some study cases of bridges and how the use of non-destructive techniques in routinary inspections can lead to more accuracy in find steel corrosion and their level inside structures. The most used technique is the Half-cell potential (HCP) (Poursaee, 2016), which is used to detect corrosion resistance of steel bars using a single contact point in the bar (electrode), and a second electrode on the concrete surface (Kawaai et al, 2019).…”

Section: Typical Techniques Of Measurementmentioning

confidence: 99%

Portable Measurement Systems Based on Microcontrollers to Test Durability of Structures: Mini-Review

Segura

Osma

2020

Front. Built Environ.

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Corrosion presence is a recurrent concern in buildings and structures that use steel as their core or as reinforcement, due to the change of steel's properties caused by this phenomena. Therefore, methods to detect and quantify corrosion had been developed; some are based on electrical and electrochemical measurements. On reinforced concrete structures, sometimes there are exposed steel bars which are visible, but on those, a visual inspection could determine corrosion presence. There exist different options to measure the steel bars' corrosion and its level. The more straight forward consists of cutting through the concrete until the bar is exposed and connecting a measurement device there. A disadvantage of this technique is that steel has to be exposed to the environment during the measurement; as an alternative, novel contact-less electrochemical techniques are getting more popular. Recent advances in low-cost and portable electrochemical devices and embedded sensors can change how the structures are tested. Moreover, there is a discussion about how those devices, if developed for other fields as biosensors, can assist in other areas. This mini-review also gives some hints of what the future trends could be due to the combination of those areas.

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“…Currently, the most common electrical methods used for the assessment of corrosion are based on measuring the half-cell potential and concrete resistivity. It has been shown the good ability of using both techniques in combination for assessing the probability of corrosion [93,94]. However, these techniques do not provide a direct quantification of the effective corrosion rate.…”

Section: Implication For Practical Applications On Rc Structuresmentioning

confidence: 99%

Indirect Galvanostatic Pulse in Wenner Configuration: Numerical Insights into Its Physical Aspect and Its Ability to Locate Highly Corroding Areas in Macrocell Corrosion of Steel in Concrete

Rodrigues

Gaboreau

Gance

et al. 2020

CMD

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The use of indirect electrical techniques is gaining interest for monitoring the corrosion of steel in concrete as they do not require any connection to the rebar. In this paper, we provide insights into the physical aspects of the indirect galvanostatic pulse (GP) method in the Wenner configuration. Considering uniform corrosion, the instantaneous ohmic drop is decreased due to the presence of the rebar, which acts as a short-circuit. However, we observed that this phenomenon is independent of the electrochemical parameters of the Butler–Volmer equation. They are, however, responsible for the nonlinear decrease of the current that polarizes the rebar over time, especially for a passive rebar due to its high polarization resistance. This evolution of the resulting potential difference with time is explained by the increase of the potential difference related to concrete resistance and the global decrease of the potential difference related to the polarization resistance of the rebar. The indirect GP technique is then fundamentally different than the conventional one in three-electrode configuration, as here the steady-state potential is not only representative of polarization resistance but also of concrete resistance. Considering non-uniform corrosion, the presence of a small anodic area disturbs the current distribution in the material. This is essentially due to the different capability of anodic and cathodic areas to consume the impressed current, resulting in slowing down the evolution of the transient potential as compared to uniform corrosion. Hence, highly corroding areas have a greater effect on the transient potential than on the steady-state one. The use of this temporal evolution is thus recommended to qualitatively detect anodic areas. For the estimation of their length and position, which is one of the main current problematic issue when performing any measurement on reinforced concrete (RC) structures with conventional techniques, we suggest adjusting the probe spacing to modulate the sensitivity of the technique.

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Assessment of reinforcement corrosion and concrete damage on bridges using non-destructive testing

Cited by 10 publications

References 44 publications

Corrosion and stray currents at urban track infrastructure

Corrosion and stray currents at urban track infrastructure

Portable Measurement Systems Based on Microcontrollers to Test Durability of Structures: Mini-Review

Indirect Galvanostatic Pulse in Wenner Configuration: Numerical Insights into Its Physical Aspect and Its Ability to Locate Highly Corroding Areas in Macrocell Corrosion of Steel in Concrete

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