Abstract
Consideration is given to the merits and drawbacks of methods used to determine the corrosive activity of soils. Data obtained by all methods considered failed to give comprehensive characteristics of the corrosive properties of soils.
A detailed discussion is given of the peculiarities of formation and functioning of macro- and micro-corrosion elements in corrosion of soils. Corrosion elements of differential aeration on the metal surface in soil resulted from the following developments: non-uniform oxygen diffusion of neighboring portions of the soil, local heterogeneity of soils, greater oxygen diffusion on the end of the structure and different depth of separate parts of the structure.
Theoretical foundations of a suggested method for the appraisal of the corrosiveness of soils are discussed in detail. A description is given of an apparatus designed to measure corrosion characteristics of soil under field conditions. Good results were obtained in field tests made with the instrument. Data are given to show the correlation between instrument readings and corrosion rates in various types of soils. 4.5.3
