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INFLUENCE OF CATHODIC PROTECTION ON pH AND CHANGE OF SOIL ELECTROLYTE COMPOSITION

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F15%3A43901190" target="_blank" >RIV/60461373:22310/15:43901190 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    INFLUENCE OF CATHODIC PROTECTION ON pH AND CHANGE OF SOIL ELECTROLYTE COMPOSITION

  • Original language description

    Cathodic protection is applied especially to protection of coating fault on a buried pipe line in a soil. According to some authors, the mechanism of cathodic protection of carbon steel is a shift of open circuit potential into the immunity region or reducing of anodic reaction rate in the active state. The importance of change of pH and soil electrolyte composition during applying cathodic protection is sometime ignored. The study deals with influence of cathodic protection on pH change and anions migration in soil electrolyte close to protected carbon steel surface. Concentration of chlorides, sulphates and hydrogen carbonates decreased about two orders of magnitude during applying cathodic protection. The migration rate of hydroxides during cathodicpolarization is lower than their production by cathodic reduction of oxygen. As a result of cathodic reduction of oxygen, the pH of soil electrolyte close to protected surface gradually increases up to 12. The final pH of soil electrolyt

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    JK - Corrosion and material surfaces

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA14-20856S" target="_blank" >GA14-20856S: The kinetics of corrosion processes and corrosion media transport in advanced ultra-high performance concretes (UHPC)</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2015

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    METAL 2015: 24th International Conference on Metallurgy and Materials

  • ISBN

    978-80-87294-62-8

  • ISSN

  • e-ISSN

  • Number of pages

    5

  • Pages from-to

    1052-1057

  • Publisher name

    Tanger s.r.o.

  • Place of publication

    Ostrava

  • Event location

    Brno

  • Event date

    Jun 3, 2015

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article