Corrosion behavior of galvanized steel due to typical soil organics

Claudia Soriano, Akram Alfantazi

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The corrosion behavior of galvanized steel due to organics typically found in soils is addressed in this exploratory study by means of the open circuit potential and the potentiodynamic polarization tests in solutions of humic compounds, carbohydrates, and carboxylic acids. Subsequently, the surface is characterized with Scanning Electron Microscope and Energy Dispersive X-ray Spectroscopy. The data shows that the corrosion effect of organic matter depends on its composition and concentration. Citric acid is the most corrosive organic. Humic acid and oxalic acid produce higher current densities at the lowest concentrations and promote the formation of physical barriers at higher concentrations that reduce exposure to the corrosive environment.

Original languageBritish English
Pages (from-to)904-912
Number of pages9
JournalConstruction and Building Materials
Volume102
DOIs
StatePublished - 15 Jan 2016

Keywords

  • Citric acid
  • Corrosion
  • Galvanized steel
  • Humic acid
  • Oxalic acid
  • Soil

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