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La réhabilitation « In Situ » de structures métalliques enterrées fortement corrodées,

La réhabilitation « In Situ » de structures métalliques enterrées fortement corrodées, un rêve ou une réalité?. Dr Ch. Pierre. Corrosion. Protection Cathodique. Critères de Protection Cathodique. L’Anode Alternative au Re-revêtement. Les Développements Futurs. ULB, 4 Novembre 2004.

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La réhabilitation « In Situ » de structures métalliques enterrées fortement corrodées,

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  1. La réhabilitation « In Situ » de structures métalliques enterrées fortement corrodées, un rêve ou une réalité? Dr Ch. Pierre • Corrosion • Protection Cathodique • Critères de Protection Cathodique • L’Anode Alternative au Re-revêtement • Les Développements Futurs ULB, 4 Novembre 2004

  2. ULB, 4 Novembre 2004

  3. ULB, 4 Novembre 2004

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  6. Metal Resistance Used Since Au  Au+ + e- Indefinite 10 000 B.C. Cu  Cu++ + 2e- Resist well 7 000 B.C. Fe  Fe++ + 2e- Little 1 300 B.C. Zn  Zn++ + 2e- Little 1 500 A.D. Na  Na+ + e- Explosive 1 800 A.D. Corrosion and Human History ULB, 4 Novembre 2004

  7. ULB, 4 Novembre 2004

  8. Every type of corrosion can be explained by differences in either Solid or Liquid phase • Dissimilarity of Solid phase: • Dissimilar metals • Different thermal treatment • Scratches or abrasion • Differential strains • Differential grains and matrix composition • Grain boundaries • Differential grain size • Rough surface • Differential curvature • Dissimilarity of Liquid phase: • Differential electrolyte composition • Differential electrolyte concentration • Differential Oxygen concentration • Temperature differential • Differential electrolyte motion • Differential illumination ULB, 4 Novembre 2004

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  16. Our followed Criteria: ULB, 4 Novembre 2004

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  18. Deep Groundbed Anodes ULB, 4 Novembre 2004

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  21. :is a long-line impressed current anode ULB, 4 Novembre 2004

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  25. - Discrete Impressed Current - Continuous (AnodeFlexTM) - Discrete - Continuous Types of Cathodic Protection Galvanic

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