Transport and Geotechnical Properties of Porous Media with Applications to Retorted Oil Shale. Volume 3. Appendix C. Water and Salt Movement in Relatively Dry Soils

摘要

Water and salt movement in dry soils is of particular interest to agronomists and engineers working with plant growth and mining waste impoundment problems in arid regions. This paper outlines some of the theoretical transport considerations relevant to water and salt migration in dry soils, and developed new non-destructive experimental techniques capable of monitoring this process. One of the techniques was used to examine water transport in the dry range of water contents via determination of the combined liquid-vapor diffusivity function. The second technique is capable of measuring changes in solution content and tracer salt concentration during solution infiltration into dry soils. Liquid-vapor diffusivity functions were examined for five different materials ranging in texture from fine sands to a clay loam. 47 refs., 23 figs., 16 tabs. (ERA citation 11:036754)