Investigating the Effect of Sedimentary Basin on Consolidation of Kerman Fine-Grained Soils

Document Type: Research Paper

Authors

1 Ferdowsi university of Mashhad

2 Ferdowsi university of mashhad

3 Ferdowsi University of Mashhad, Iran

4 Ferdowsi University of Mashhad

Abstract

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 Kerman city intrinsic consolidation line (ICL). To obtain the ICL, 25 soil samples were taken from several locations and depths of the study area and mixed with 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 Kerman city deposits, the results of consolidation tests were plotted on 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 ICL of Kerman soils. This comparison was applied in three regions along the paths of rivers that supply the fine sediments of Kerman plain. The results have shown that soil structure and fabric have not been developed abundantly and the effect of sedimentary model has caused the compression.

Keywords