On-site measurements of corrosion rate of reinforcements

Andrade, C; Alonso, C.

doi:10.1016/s0950-0618(00)00063-5

Cited by 220 publications

(91 citation statements)

References 1 publication

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“…The potential shift and applied current density are inserted into the Butler-Volmer equation, which provides the basis for polarisation resistance theory, to calculate the corrosion rate. There are several variations on this method, but this variation is more suited to the determination of corrosion rates in site conditions as it uses a larger potential shift and less complex equipment than is commonly applied in the laboratory and makes use of the existing CP anode system as a guard electrode [18].…”

Section: Methods Of Assessmentmentioning

confidence: 99%

Assessing the long term benefits of Impressed Current Cathodic Protection

et al. 2010

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This experimental field study interrupted the protection current offered by Impressed Current Cathodic Protection (ICCP) to ten in-service reinforced concrete structures. The study aimed to identify the long term effects of ICCP after it was recognised that some of the systems are now reaching the end of their design life and require a significant level of maintenance. It was found that after five or more years of ICCP, the steel remained passive for at least 24 months after interrupting the protection current despite chloride contamination that would represent a corrosion risk.

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Section: Methods Of Assessmentmentioning

confidence: 99%

Assessing the long term benefits of Impressed Current Cathodic Protection

et al. 2010

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“…In all cases, by the end of the tests (900 days) the values of  lie between 500 and 1000 kohm.cm. These values, according to Andrade and Alonso, imply negligible corrosion because the matrix is too dry [8]. In figure 3 it is shown that, in the case of no aggressive ion additions to the mix or when sulphate ions are added, the E corr remains stable during the 900 days of exposure.…”

Section: Resultsmentioning

confidence: 88%

Corrosion susceptibility of steel drums to be used as containers for intermediate level nuclear waste

Farina

Rodríguez

Duffó

2013

EPJ Web of Conferences

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Abstract. The present work is a study of the corrosion susceptibility of steel drums in contact with cemented ion-exchange resins contaminated with different types and concentrations of aggressive species. A special type of specimen was manufactured to simulate the cemented ion-exchange resins in the drum. The evolution of the corrosion potential and the corrosion rate of the steel, as well as the electrical resistivity of the matrix were monitored over a time period of 900 days. The aggressive species studied were chloride ions (the main ionic species of concern) and sulphate ions (produced during radiolysis of the cationic exchange-resins after cementation). The work was complemented with an analysis of the corrosion products formed on the steel in each condition, as well as the morphology of the corrosion products. When applying the results obtained in the present work to estimate the corrosion depth of the steel drums containing the cemented radioactive waste after a period of 300 years (foreseen durability of the Intermediate Level Radioactive Waste facility in Argentina) , it is found that in the most unfavourable case (high chloride contamination), the corrosion penetration will be considerably lower than the thickness of the wall of the steel drums.

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“…From this figure it is possible to deduce that the temperature evolution due to the seasonal changes is, again, the most influencing factor for the trends recorded. The reinforcement corrosion rate values are in the borderline between low and negligible corrosion rate [5].…”

Section: Resultsmentioning

confidence: 97%

“…These values give a carbonation rate (k in the equation x=k.t 0.5 , x being the carbonation depth and t the exposure time), of 2.59 mm.years -0. 5 . The values of the carbonation rate obtained in the present work compared with those obtained by Andrade et al [6] for the same type of application show that, up to the moment, the values obtained in the present case are higher than those measured in the "El Cabril" facility ( Figure 7).…”

Section: Resultsmentioning

confidence: 99%

Corrosion behaviour of steel rebars embedded in a concrete designed for the construction of an intermediate-level radioactive waste disposal facility

Duffó

Arva

Schulz

et al. 2013

EPJ Web of Conferences

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Abstract. The National Atomic Energy Commission of the Argentine Republic is developing a nuclear waste disposal management programme that contemplates the design and construction of a facility for the final disposal of intermediate-level radioactive wastes. The repository is based on the use of multiple, independent and redundant barriers. The major components are made in reinforced concrete so, the durability of these structures is an important aspect for the facility integrity. This work presents an investigation performed on an instrumented reinforced concrete prototype specifically designed for this purpose, to study the behaviour of an intermediate level radioactive waste disposal facility from the rebar corrosion point of view. The information obtained will be used for the final design of the facility in order to guarantee a service life more or equal than the foreseen durability for this type of facilities.

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On-site measurements of corrosion rate of reinforcements

Cited by 220 publications

References 1 publication

Assessing the long term benefits of Impressed Current Cathodic Protection

Assessing the long term benefits of Impressed Current Cathodic Protection

Corrosion susceptibility of steel drums to be used as containers for intermediate level nuclear waste

Corrosion behaviour of steel rebars embedded in a concrete designed for the construction of an intermediate-level radioactive waste disposal facility

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