عنوان مقاله [English]
Plastic limit variations of clay soil depend upon different factors including lime type and percentage, curing moisture content, curing time, type and percentage of clay soil minerals and soil-lime mixture pH. Clay soil mineral type (i.e. soil mineralogy) is one of the most important factors. Clay soil consists of various minerals including kaolinite, montmorillonite, illite etc. Plastic limit variations routine would change duo to changes in mineral combination of clay soil under stabilization. The obtained results of present study indicate that plastic limit variations routine is ascending due to lime addition to clay soil for most of the minerals. Liquid limit variations, however, are different and it can be either ascending some minerals or descending for the others. Furthermore, the obtained results show that the higher the mixture curing moisture content, the higher the plasticity index.
 Bell, F. G.; ''Stabilization and Treatment of Clay Soils with Lime, Part 1—Basic Principles.'' Ground Eng., 21(1), 10–15,1988.