Investigation of processes occurring at cathodically protected underground installations: Experimental study of pH alteration and mathematical modeling of oxygen transport in soil
Source abstract
Abstract
Abstract A detailed analysis of the complex processes occurring at the surface of cathodically protected underground metal installations is presented. In the first part an alteration of soil pH in vicinity of cathodically polarized buried specimen of carbon-steel pipe is investigated experimentally. In the second part a stationary two‐phase oxygen transport to a defect in the protective coating of an underground pipe is studied by mathematical modeling and protection current solely given by oxygen reduction are calculated. This information is crucial to an evaluation of subsequent processes taking place at a protected metal surface, which is part of a follow-up study.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Hydrogen embrittlement and corrosion behaviors in metals · Electrokinetic Soil Remediation Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (52)
Show source-provided references
1. McCafferty · 2009
2. Baeckmann · 1997
3. Grafen · 2009
4. Predicting the time dependence of polarization on cathodically protected steel in seawater10.5006/1.3583115 ↗
5. Role of surface structure and flow rate on the polarization of cathodically protected steel in seawater10.5006/1.3583856 ↗
6. Time-dependent polarization behavior of pipeline grade steel in low ionic strength environments10.1023/A:1003412222992 ↗
7. Local environment under simulated disbonded coating on steel pipelines in soil solution10.1016/j.corsci.2008.01.004 ↗
8. Current and potential distribution on a coated pipeline with holidays part I—Model and experimental verification10.5006/1.3316041 ↗
9. Model investigation of the peculiarities of the corrosion and cathodic protection of steel in the insulation defects on underground steel pipelines10.1023/A:1012378500386 ↗
10. Cathodic protection of soil buried steel pipelines – a critical discussion of protection criteria and threshold values10.1002/maco.201608862 ↗
11. The differential aeration cell and the corrosion paradox10.1002/maco.201307446 ↗
12. Potential-pH diagrams at elevated temperature for the system Fe-H2O10.1016/S0010-938X(70)80025-7 ↗
13. Corrosion rate of cathodically protected steel in carbonate environment
14. NACE standard RP0169‐2002 · 2002
15. Cathodic protection to mitigate external corrosion of underground steel pipe beneath disbonded coating10.5006/1.3293470 ↗
16. Electrochemical measurements using combination microelectrode in crevice simulating disbonded of pipeline coatings under cathodic protection10.1179/174327807X159934 ↗
17. Current distribution and electrochemical environment in a cathodically protected crevice10.5006/1.3283983 ↗
18. Chemical and electrochemical conditions on steel under disbonded coatings: the effect of previously corroded surfaces and wet and dry cycles10.1016/S0010-938X(00)00103-7 ↗
19. Cathodic-generated film protects pipe surface
20. Experimental studies of crevice corrosion for buried pipeline with disbonded coatings under cathodic protection10.1016/j.jlp.2014.02.007 ↗
21. Změny u povrchu katodicky chráněné oceli v půdě
22. Calcareous deposits on metal surfaces in seawater—A critical review10.5006/1.3581927 ↗
23. Modeling pipeline corrosion under a disbonded coating under the influence of underneath flow10.5006/1.3278460 ↗
24. Modeling transport process and current distribution in a cathodically protected crevice10.5006/1.3280581 ↗
25. Analysis of pipeline steel corrosion data from NBS (NIST) studies conducted between 1922 and 1940 and relevance to pipeline management
26. The science of pipe corrosion: a review of the literature on the corrosion of ferrous metals in soils10.1016/j.corsci.2011.12.001 ↗
27. Modeling pipeline crevice corrosion under a disbonded coating with or without cathodic protection under transient and steady state conditions10.1016/j.corsci.2007.05.024 ↗
28. Predicting corrosion and current flow within a disc crevice on coated steels10.5006/1.3278169 ↗
29. A two-dimensional model for steel corrosion under a disbonded coating due to oxygen with or without cathodic Protection—Part 1: full numerical solution10.5006/1.3278294 ↗
30. Predicting the chemistry, corrosion potential and corrosion rate in a crevice formed between substrate steel and a disbonded permeable coating with a mouth10.1016/j.corsci.2011.10.013 ↗
31. A mathematical model developed to predict the chemistry and corrosion rate in a crevice of variable gap10.1016/j.electacta.2011.05.083 ↗
32. Mathematical models for cathodic protection of an underground pipeline with coating holidays part 1 — theoretical development10.5006/1.3280467 ↗
33. Mathematical models for cathodic protection of an underground pipeline with coating holidays part 2 — case studies of parallel anode cathodic protection systems10.5006/1.3280485 ↗
34. A numerical model for cathodic protection of buried pipes10.5006/1.3293492 ↗
35. Current and potential distribution modeling for cathodic protection of tank bottoms10.5006/1.3553930 ↗
36. A mathematical model for the cathodic protection of tank bottoms10.1016/j.corsci.2004.07.018 ↗
37. Application of boundary element models to predict effectiveness of coupons for assessing cathodic protection of buried structures10.5006/1.3280582 ↗
38. Finite element modeling for cathodic protection of pipelines under simulating thermocline environment in deep water using a dynamic boundary condition10.1149/2.092309jes ↗
39. On the extension of CP models to address cathodic protection under a delaminated coating10.1016/j.corsci.2009.01.023 ↗
40. A mathematical model for cathodic delamination of coated metal including a kinetic pH–porosity relationship10.1149/1.2884857 ↗
41. On boundary elements for simulation of cathodic protection systems with dynamic polarization curves10.1002/(SICI)1097-0207(19970730)40:14<2611::AID-NME178>3.0.CO;2-P ↗
42. How groundwater seepage and transport modelling software can be useful for studying gaseous transport in an unsaturated soil10.1111/j.1747-6593.2007.00106.x ↗
43. Impacts of unsaturated zone properties on oxygen transport and aquifer reaeration10.1111/j.1745-6584.2000.tb02714.x ↗
44. Measurement and prediction of the oxygen diffusion in unsaturated media with applications to soil covers10.1023/B:WATE.0000036803.84061.e5 ↗
45. Evaluation of diffusive gas flux through covers with a GCL10.1016/S0266-1144(99)00028-X ↗
46. Investigation of processes occurring at cathodically protected underground installations: mathematical modeling of reaction transport processes in soil
47. Study of passive films formed on mild steel in alkaline media by the application of anodic potentials10.1016/j.matchemphys.2008.11.012 ↗
48. Aeration cell corrosion of carbon steel in soil: in situ monitoring cell current and potential10.1016/S0010-938X(96)00050-9 ↗
49. Meredith · J. Appl. Phys. · 1960 · 31 · 127010.1063/1.1735816 ↗
50. Soil minerals and their surface properties
51. Sandler · 1989
52. 2009