Factors influencing half-cell potential measurement and its relationship with corrosion level

Yodsudjai, Wanchai

doi:10.1016/j.measurement.2017.03.027

Cited by 55 publications

(23 citation statements)

References 17 publications

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“…Half‐cell potential (HCP) is a simple and fast method, which is used for determining the probability of rebar corrosion in concrete before the appearance of damage on the exposed surface. This device measures the potential difference between the reference electrode and the rebar . The HCP of corrosion was measured in accordance with ASTM C876 using a canin + ™ device with a copper/copper (II) sulfate (Cu/CuSO4) reference electrode .…”

Section: Experimental Programmentioning

confidence: 99%

“…This device measures the potential difference between the reference electrode and the rebar. 38,39 The HCP of corrosion was measured in accordance with ASTM C876 using a canin + ™ device with a copper/copper (II) sulfate (Cu/CuSO4) reference electrode. 40 A simple comparison of the half-cell potential data with the ASTM guideline on steel reinforcement could provide good insight on corrosion probability of rebar (see Table 7).…”

Section: Half-cell Potentialmentioning

confidence: 99%

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Modeling of chloride ions penetration in cracked concrete structures exposed to marine environments

Ramezanianpour

Ghoreishian

Ahmadi³

et al. 2018

Structural Concrete

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The degradation caused by corrosion of rebar in concrete structures is one of the most important issues to attract the attention of researchers focused on concrete durability. 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. Tests were performed after 48‐months exposure of all samples to a harsh marine environment. For studying the influence of load‐induced cracks on the rebar corrosion, cracked and uncracked beams were tested. Results of this study demonstrated that by the increment of the crack width, corrosion of reinforcement increased and as a result, the probability of degradation of reinforced concrete beams increased accordingly. Furthermore, by the increment of crack width, their depth also increased which caused enhancement of crack depth on the rebar and easier access of chloride ions to the rebar.

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Section: Experimental Programmentioning

confidence: 99%

Section: Half-cell Potentialmentioning

confidence: 99%

Modeling of chloride ions penetration in cracked concrete structures exposed to marine environments

Ramezanianpour

Ghoreishian

Ahmadi³

et al. 2018

Structural Concrete

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“…Recently, it was reviewed of research works which comparatively evaluated the laboratory and field toward identifying technically relevant situations where the use of sacrificial anodes may or may not be a practical option for reinforcement protection in concrete structures [8,21]. Influences of concrete cover, chloride content, compressive strength and moisture content on the half-cell potential measurement in reinforced concrete structure was studied and the results reported that the half-cell potential decreased when chloride content and moisture content increased and it was found to be increased when compressive strength increased [25].…”

Section: Introductionmentioning

confidence: 99%

Assessment on Corrosion Damage of Steel Reinforced Concrete Structures of Kathmandu Valley Using Corrosion Potential Mapping Method

Phulara

Bhattarai

2019

J. Inst. Engineering

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Present study is focused to investigate the corrosion damage conditions of steel reinforced twenty eight different types of the concrete structure samples from Kathmandu valley using a non-destructive technique of the corrosion potential mapping (CPM) method in accordance with ASTM C876-91 Standards. It is found from the present assessment that the building roof of public owners house, hume pipes and building pillars used in Kathmandu valley are generally under the low risk of reinforced steel corrosion in these concrete structures, that is, less than 10 % probability of the corrosion damage, although the fencing pillars and the roof slabs of different office buildings are found to be high risk of reinforced steel corrosion damage, that is, more than 90 % probability of corrosion damage among twenty eight concrete structures.

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“…Due to this, it can be mentioned that the reason for lack of clarity in the effects of AEA on corrosion of RC is the method of evaluating the corrosion behavior of RC from the results of permeability test at which some significant errors may be included, or using half‐cell potential (HCP) and electrical resistivity (ER) tests, which are among the conventional methods of determining permeability and corrosion of concrete . The ER value generally states the corrosion progress in RC as a dependent parameter on the hardened cement paste, while the HCP value expresses the probability of the corrosion phenomenon . Therefore, it is not possible to determine the positive or negative effect of AEA on corrosion behavior of RC using these two methods, due to their insufficient accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…12 The ER value generally states the corrosion progress in RC as a dependent parameter on the hardened cement paste, 11 while the HCP value expresses the probability of the corrosion phenomenon. 13,14 Therefore, it is not possible to determine the positive or negative effect of AEA on corrosion behavior of RC using these two methods, due to their insufficient accuracy.…”

mentioning

confidence: 99%

Corrosion behavior and optimization of air‐entrained reinforced concrete, incorporating microsilica

Ghanei

Eskandari‐Naddaf

Davoodi

2018

Structural Concrete

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Nowadays, corrosion evaluation of steel embedded in reinforced concrete (RC) plays an important role in repair, protection and maintenance of RC structures. Air‐entraining agent (AEA) and microsilica (MS) are among the most important admixtures, which affect the corrosion rate (CR) of RC. Specifically, 12 mix designs incorporating different contents of AEA (ie, 0, 0.7, 1.4, 2.1, 2.9, and 3.6% by weight), half with 10% MS, were constructed. The corrosion behavior of RC specimens after exposure to 3.5% NaCl environment was investigated using half‐cell potential (HCP) and electrical resistance (ER) as conventional tests and Tafel polarization as a more powerful corrosion test. Moreover, an optimization process was conducted on the mix design parameters using Taguchi and Factorial methods to analyze the effective factors and sensitivity of CR to each factor. The results of Tafel test indicate that they are noticeably more reliable and reasonable as compared to HCP and ER tests. Moreover, the results show that incorporating a low content of AEA (up to 0.7%) effectively improves the corrosion behavior of RC specimens, while the mix design containing 0.7% AEA together with 10% MS is the optimal design in terms of a decreased CR. The results also show that Factorial is a more applicable method in the field of corrosion evaluation of RC, due to the yield of more accurate findings as compared to Taguchi.

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Factors influencing half-cell potential measurement and its relationship with corrosion level

Cited by 55 publications

References 17 publications

Modeling of chloride ions penetration in cracked concrete structures exposed to marine environments

Modeling of chloride ions penetration in cracked concrete structures exposed to marine environments

Assessment on Corrosion Damage of Steel Reinforced Concrete Structures of Kathmandu Valley Using Corrosion Potential Mapping Method

Corrosion behavior and optimization of air‐entrained reinforced concrete, incorporating microsilica

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