Degradation process of Ag/AgCl chloride-sensing electrode in cement extract with low chloride concentration
Source abstract
Abstract
The accelerated degradation process of Ag/AgCl chloride-sensing electrode was investigated in cement extract by electrochemical behaviors monitoring and surface analysis. The results showed that the potential of Ag/AgCl chloride-sensing electrode was negatively shifted in cement extract, accompanied by the continuous dissolution and exfoliation of AgCl film; however, no Ag2O formed on the electrode surface. The adhesive strength of AgCl to Ag substrate maintained the equilibrium potential of Ag/AgCl chloride-sensing electrode during early stage, but the negative potential shift was pronounced during late stage, which was related to the adsorption of OH- at Ag/AgCl interface, suppressing cathodic reaction on the electrode.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Concrete Corrosion and Durability · Analytical Chemistry and Sensors · Smart Materials for Construction
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References (43)
Show source-provided references
1. Aspects of the electrochemistry of steel in concrete10.1038/297109a0 ↗
2. Modelling capillary effects on the reactive transport of chloride ions in cementitious materials10.1016/j.cemconres.2020.106033 ↗
3. Chloride threshold level for corrosion of steel in concrete10.1016/j.corsci.2007.05.007 ↗
4. Critical chloride content in reinforced concrete – a review10.1016/j.cemconres.2009.08.006 ↗
5. Chloride-induced corrosion on reinforcing steel: from the fundamentals to the monitoring techniques10.1016/S0958-9465(02)00089-6 ↗
6. Non-uniform corrosion states of rebar in concrete under chloride environment10.1016/j.corsci.2015.01.031 ↗
7. Corrosion of steel in concrete structures
8. A review of corrosion and protection of steel in concrete10.1007/s13369-018-3303-2 ↗
9. P.K. Mehta, P.J. Monteiro, Concrete: Microstructure, Properties, and Materials, third ed., 2006.
10. M. Climent-Llorca, G. de Vera, A. Hidalgo, C. Andrade, C. Alonso, Chloride ion activities in synthetic concrete pore solutions: theoretical models and potentiometric measurements, in: Proceedings of the Materials Science of Concrete: The Sidney Diamond Symposium, American Ceramic Society, Westerville, OH, USA, 1998, pp. 285–294.
11. Generalization of the possibility of eliminating the filtration step in the determination of acid-soluble chloride content in cement and concrete by potentiometric titration10.1016/j.cemconres.2004.04.012 ↗
12. Determination of the selectivity coefficient of a chloride ion selective electrode in alkaline media simulating the cement paste pore solution10.1016/j.jelechem.2009.11.010 ↗
13. Chloride‐ion activities in simplified synthetic concrete pore solutions: the effect of the accompanying ions10.1111/j.1151-2916.2000.tb01245.x ↗
14. Predicting the time to corrosion initiation in reinforced concrete structures exposed to chlorides10.1016/j.cemconres.2018.08.007 ↗
15. Non-destructive measurement of chloride ions concentration in concrete – a comparative analysis of limitations and prospects10.1016/j.conbuildmat.2018.04.135 ↗
16. Characterization of Ag/AgCl electrode manufactured by immersion in sodium hypochloride acid for monitoring chloride content in concrete10.1016/j.conbuildmat.2016.05.163 ↗
17. A state-of-the-art review on Ag/AgCl ion-selective electrode used for non-destructive chloride detection in concrete10.1016/j.compositesb.2020.108289 ↗
18. recommendations for nomenclature of ion-selective electrodes (iupac recommendations 1994)10.1351/pac199466122527 ↗
19. Monitoring chloride concentration in hardened cement pastes using ion selective electrodes10.1016/0008-8846(95)00218-9 ↗
20. Potentiometric response of Ag/AgCl chloride sensors in model alkaline medium
21. Multiprobe chloride sensor for in situ monitoring of reinforced concrete structures10.1016/j.cemconcomp.2006.01.005 ↗
22. Ag/AgCl ion-selective electrodes in neutral and alkaline environments containing interfering ions10.1617/s11527-015-0673-8 ↗
23. Spatial variability of chloride in concrete within homogeneously exposed areas10.1016/j.cemconres.2013.10.010 ↗
24. Embeddable Ag=AgCl sensors for in-situ monitoring chloride contents in concrete10.1016/0008-8846(96)00104-4 ↗
25. Non destructive determination of the free chloride content in cement based materials10.1002/maco.200390095 ↗
26. Degradation of concrete with addition of mineral admixture due to free chloride ion penetration under the effect of carbonation10.1016/j.corsci.2018.04.004 ↗
27. Chemical composition of cement pore solutions10.1016/0008-8846(89)90022-7 ↗
28. The effect of simulated concrete pore solution composition and chlorides on the electronic properties of passive films on carbon steel rebar10.1016/j.corsci.2016.01.027 ↗
29. Characterization of embeddable potentiometric thick-film sensors for monitoring chloride penetration in concrete10.1016/j.snb.2015.07.056 ↗
30. Potentiometric determination of the chloride ion activity in cement based materials10.1007/s10800-009-0029-6 ↗
31. Relationship between microstructure of AgCl film and electrochemical behavior of Ag=AgCl electrode for chloride detection10.1016/j.corsci.2021.109393 ↗
32. Carbonization of porous concrete and its main binding components10.1016/0008-8846(71)90019-6 ↗
33. Microstructural changes caused by carbonation of cement mortar10.1016/S0008-8846(01)00498-7 ↗
34. Study of structure and optical properties of silver oxide films by ellipsometry, XRD and XPS methods10.1016/j.tsf.2003.11.242 ↗
35. W.F. Stickle, J.F. Moulder, P.E. Sobol, et al., Handbook of X-Ray Photoelectron Spectroscopy: A Reference Book of Standard Spectra for Identification and Interpretation of XPS Data, Eden Prairie, MN: Physical Electronics, 2000.
36. Surface analytical investigations of the electrochemical double layer on silver electrodes in alkaline media10.1016/S0013-4686(98)00036-X ↗
37. Corrosion, oxidation, erosion and performance of Ag/W-based circuit breaker contacts: a review10.1016/j.corsci.2018.02.010 ↗
38. Relationship between constant-phase element (CPE) parameters and physical properties of films with a distributed resistivity10.1016/j.electacta.2016.12.087 ↗
39. Determination of effective capacitance and film thickness from constant-phase-element parameters10.1016/j.electacta.2009.10.065 ↗
40. Enhanced graphical representation of electrochemical impedance data10.1149/1.2168377 ↗
41. Constant-phase-element behavior caused by resistivity distributions in films10.1149/1.3496423 ↗
42. Lide · 1999
43. Orazem · 2008