This study addresses the need for investigation of drying-rate characteristics of fine-grain soils. The research was an attempt to develop a parameter for use in thermal consolidation and/or shrinkage modeling. The investigation required the development of new test methods. During the study, a strong correlation between plasticity indices and certain drying characteristics was noted and discussed in detail. An argument is presented for the superiority of the Drying-Rate Test in comparison with current laboratory procedures for determining Atterberg Limits.