Performance assessment of specialist conductive paint for cathodic protection of steel in reinforced concrete structures

Research output: Contribution to journalArticle

Abstract

ICCP system provides effective corrosion protection in a chloride environment. This research evaluates the feasibility of zinc rich paints (ZRP) as ICCP anode for RC structures. The preliminary investigation showed the application of three layers of ZRP with medium concrete surface roughness and use of Cu/Nb/Pt wire as primary anode gives maximum bond strength and uniform current distribution across the ZRP coating. Moreover, polarization results showed satisfactory performance of the ZRP anode coating subjected to a current density of 12.5 mA/m2. The anode was found to be vapour permeable and effectively provide protection with a service life of up to 15 years.
Original languageEnglish
Pages (from-to)1083-1094
Number of pages12
JournalConstruction and Building Materials
Volume223
Early online date8 Aug 2019
DOIs
Publication statusPublished - 30 Oct 2019

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Cathodic protection
Steel
Concrete construction
Paint
Reinforced concrete
Zinc
Anodes
Coatings
Bond strength (materials)
Corrosion protection
Service life
Chlorides
Current density
Surface roughness
Vapors
Wire
Concretes
Polarization

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, 223, (2019) DOI: 10.1016/j.conbuildmat.2019.07.344

© 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • Steel reinforced concrete
  • Conductive paint
  • Microstructure
  • Coating anode
  • Cathodic protection
  • Service life
  • Permeability
  • Polarization

Cite this

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title = "Performance assessment of specialist conductive paint for cathodic protection of steel in reinforced concrete structures",
abstract = "ICCP system provides effective corrosion protection in a chloride environment. This research evaluates the feasibility of zinc rich paints (ZRP) as ICCP anode for RC structures. The preliminary investigation showed the application of three layers of ZRP with medium concrete surface roughness and use of Cu/Nb/Pt wire as primary anode gives maximum bond strength and uniform current distribution across the ZRP coating. Moreover, polarization results showed satisfactory performance of the ZRP anode coating subjected to a current density of 12.5 mA/m2. The anode was found to be vapour permeable and effectively provide protection with a service life of up to 15 years.",
keywords = "Steel reinforced concrete, Conductive paint, Microstructure, Coating anode, Cathodic protection, Service life, Permeability, Polarization",
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