ABSTRACT
A comprehensive field research (Logan et al. 1937) showed that the corrosion rate of ferrous metals varies from an almost unchanged rate in some soils to nearly stopped (virtual cessation) in other soils. Also, the corrosion mechanisms and processes are identified soil-dependent due to various heterogeneities (Norin & Vinka 2003), and the corrosion of buried iron is expected to exclusively depend on soil types (Kreysa & Schütze 2008), which is proved by earlier field tests (Romanoff 1957, 1964). In general terms, soils with poor aeration, high electrical conductivity and moisture content
between corrosion behavior and soil properties is proposed, which is supported by a survey study of reported field database for cast iron pipes buried in clay soils and by the initial result from a systematic in-house long term lab test program.
