On the optimum soil moisture for underground corrosion in different soil types

Abstract Corrosion rates in sand, silt, and clay were investigated at various degrees of saturation (Sr) revealing that all three soil types have a distinct optimum Sr at which the corrosion rate is maximised. Sand, silt, and clay showed maximum corrosion currents at Sr ≈0.5, Sr ≈0.7, and Sr ≈0.8 respectively. We show that the optimum moisture level at which the corrosion rate becomes a maximum for a given soil type corresponds to the air transition point related to its water retention curve. We provide an explanation for this phenomenon elucidating previous observations, and highlight implications to current engineering practice.

• Publication year

  2019

• Venue

  Corrosion Science

• Publication date

  2019-10-01

• Fields of study

  Environmental Science

• Identifiers
  DOI 10.1016/J.CORSCI.2019.108116
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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