The Laboratory Study of Shear Strength of the Overconsolidated and Quasi - Overconsolidated Fine - Grained Soil

World Multidisciplinary Earth Sciences Symposium 2017

Strozyk, Joanna^1

Wroclaw University of Science and Technology, Faculty of Civil Engineering, 27 Wybrzeze Wyspiaskiego st., Wroclaw

50-370, Poland^1

关键词: Consolidation stress;    Environmental conditions;    Fine grained soil;    Geotechnical parameters;    Grain size distribution;    Laboratory studies;    Natural structures;    Shear strength tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/95/2/022055/pdf
DOI  :  10.1088/1755-1315/95/2/022055

来源: IOP

【 摘 要 】

The paper presents results of laboratory shear strength test conducted on fine-grained soil samples with different grain size distribution and with different geological age and stress history. The Triaxial Isotopic Consolidation Undrained Tests (TXCIU) were performed under different consolidation stress in normal and overconsolidadion stress state on the samples with natural structure. Soil samples were selected from soil series of different age and geological origins: overconsolidated sensu stricto Miopliocene silty clay (siCl) and quasi overconsolidated Pleistocene clayey silt (clSi). Paper pointed out that overconsolidated sensu stricto and quasi overconsolidated fine-grained soil in same stress and environmental condition could show almost similar behaviour, and in other condition could behave significantly different. The correct evaluation of geotechnical parameters, the possibility of predicting their time-correct ability is only possible with appropriately recognized geological past and past processes that accompanied the soil formation.