Characterization of Activated Titanium Solid Reference Electrodes for Corrosion Testing of Steel in Concrete

Castro, P.; Sagüés, Alberto A.; Moreno, Éric I.; Maldonado, L.; Genescá, J.

doi:10.5006/1.3292151

Cited by 61 publications

(37 citation statements)

References 2 publications

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“…The surface area exposed to mortar of bars was delimitated using an isolating tape. Ti-activated electrodes [27] where embedded close to the corrugated bars to allow the monitoring of the carbonation front in a subsequent step. Other details about the samples can be found in a previous work [11].…”

Section: Methodsmentioning

confidence: 99%

Corrugated stainless steels embedded in carbonated mortars with and without chlorides: 9-Year corrosion results

Bautista

Alvarez

Paredes

et al. 2015

Construction and Building Materials

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Section: Methodsmentioning

confidence: 99%

Corrugated stainless steels embedded in carbonated mortars with and without chlorides: 9-Year corrosion results

Bautista

Alvarez

Paredes

et al. 2015

Construction and Building Materials

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“…The temperature in the chamber was 18 ± 1 • C and the relative humidity was 75-80%. The potential of the Ti-electrode was monitored periodically using a saturated calomel electrode (SCE) placed on the top surface of the cylindrical sample [31], using a wet pad to assure good electrical contact. The carbonation of each sample was determined individually by an abrupt increase in the potential (of about 0.2 V) that corresponds to a change in the pH, thus avoiding the possible dispersion in the advance of the carbonation front caused by the placement of samples in the chamber [32].…”

Section: Methodsmentioning

confidence: 99%

Welded, sandblasted, stainless steel corrugated bars in non-carbonated and carbonated mortars: A 9-year corrosion study

et al. 2016

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Institutional RepositoryThis is a postprint version of the following published document:A. Bautista (et al.). Three different stainless steel corrugated grades ( UNS 520430, 530403 and 532205) were similar welded to stainless steel bars with the same composition and dissimilar welded to carbon steel ( CS) . After deaning the welding oxides by sandblasting, the reinforcements were embedded in mortar with chlorides and some of the samples were carbonated. Corrosion activity was monitored using corrosion potential ( Ecorr) and electrochemical impedance spectroscopy( EIS) . After 8 years of exposure, the samples were anodically polarized. Visual evaluation of the attack was performed after another additional year of exposure. Similar welded stainless steels offer a good durability if they have been sandblasted, except for 520430 when it is embedded in carbonated mortar with chlorides. Dissimilar welded steels are active since the beginning of the exposure for both studied conditions, but sandblasting reduces the corrosion rate of CS compared to non-welded CS bars. C. Welding

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“…Castro 9 and Duffo 2 have adopted the metal-metal oxide activated titanium rod as the RE used in concrete, but the potential of this electrode was dependent on pH value. MnO 2 RE has been introduced as the embeddable RE in concrete, 8,10,11 however, it didn't belong to the traditional categories of REs because the potential of MnO 2 RE could not be described by a theoretical formula or equation.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Characterization of Solid Ag/AgCl Reference Electrode with Different Electrolytes for Corrosion Monitoring of Steel in Concrete

Jin

Jiang

et al. 2016

Electrochemistry

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Solid Ag/AgCl reference electrodes (RE) with different electrolytes were assembled and characterized in concrete. The performances have been studied with respect to known RE. And the corrosion states of steel have been investigated with respect to embedded and external REs by different electrochemical techniques. Results revealed that half-cell potential of 0.1, 1 and 4.18 M AgCl RE was 20 mV, −30.5 mV and −54.6 mV, respectively. In addition, 4.18 M AgCl RE exhibited the minimum potential drift, the smallest temperature coefficient value and the best reversibility. These corrosion parameters such as rebar potential, corrosion current density (I corr ) and charge transfer resistance (R ct ) obtained for steel with respect to these embedded AgCl REs could clearly differentiate the active condition of steel from the passive condition. Besides, I corr and R ct obtained for steel with respect to external SCE were usually 2 or 3 times larger than these embedded AgCl REs. In such cases embedded AgCl REs could accurately investigate the corrosion rate of steel in concrete. Moreover, the 4.18 M AgCl RE was recommended to monitor the corrosion condition of steel in concrete structure.

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Characterization of Activated Titanium Solid Reference Electrodes for Corrosion Testing of Steel in Concrete

Cited by 61 publications

References 2 publications

Corrugated stainless steels embedded in carbonated mortars with and without chlorides: 9-Year corrosion results

Corrugated stainless steels embedded in carbonated mortars with and without chlorides: 9-Year corrosion results

Welded, sandblasted, stainless steel corrugated bars in non-carbonated and carbonated mortars: A 9-year corrosion study

Electrochemical Characterization of Solid Ag/AgCl Reference Electrode with Different Electrolytes for Corrosion Monitoring of Steel in Concrete

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