In this research, the effects of a sedimentary basin, environmental conditions, and the passage of time were investigated on consolidation processes and engineering characteristics of fine-grained soils in Kerman city. For this purpose, the natural consolidation curves of soil samples extracted from different locations of Kerman city were compared with the intrinsic consolidation line (ICL) of the city. To obtain the ICL, 25 soil samples were taken from several locations and depths of the study area and were mixed with a high water content equivalent 1.0 to 1.5 times their liquid limit. Then, one-dimensional consolidation tests were performed on reconstituted soils. Using the normalizing parameter (void index) proposed by Burland and the ICL of the Kerman city deposits, the results of consolidation tests were plotted on a Iv- Log(σ́v) space. To investigate the effects of the sedimentary basin on engineering properties of fine-grained deposits in Kerman city, natural sedimentation compression curves were compared with the ICL of Kerman soils. This comparison was applied in three regions along the paths of rivers that supply the fine sediments of the Kerman plain. The results have shown that the soil structure and fabric have not been developed abundantly and the effect of the sedimentary model has caused the compression.

Keywords