A Comparative Study on Consolidation of Clay using Laboratory Oedometer and Fabricated 3D Consolidation Apparatus

IJEP 42(13): 1653-1658 : Vol. 42 Issue. 13 (Conference 2022)

Soumi Koley, Abhijit Debnath and Sujit Kumar Pal* 

National Institute of Technology Agartala, Department of Civil Engineering, Tripura – 799 046, India


In saturated clayey soil, decrease in volume occurs due to exclusion of water from voids. The soil consolidation gives us an estimate of the rate and magnitude of settlement that any particular soil has undergone. Consolidation plays a key role in the embankment’s stability analysis, any structure like column or footing constructed on clayey soils. Practically, the radial flow of water is not the same in all radial directions due to different boundary conditions of soil mass; therefore, it is essential to consider varying drainage conditions to forecast the consolidation characteristics of soil for the subsequent in-situ conditions. In the present study, an experimental investigation was performed to estimate the consolidation characteristics of soil by oedometer apparatus and 3D consolidation apparatus by varying the drainage conditions; the condition having the highest co-efficient of consolidation as well as the rate of consolidation was determined. A comparison was also established between the consolidation characteristics of laboratory oedometer apparatus and 3D consolidation apparatus. From experimental results, it is perceived that the water extraction rate increases when the radial flow is taken under consideration alongwith the vertical flow and this radial flow has an enormous effect on co-efficient of consolidation of soil. The present study is beneficial in the case of ground conditions where soft saturated clayey soil exists.


Consolidation, Radial flow, Oedometer, Co-efficient of consolidation, Rate of consolidation


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