Nihal D. Salman This email address is being protected from spambots. You need JavaScript enabled to view it.1,2, György Pillinger3, and Péter Kiss3

1Mechanical Engineering Doctoral School, Szent István Campus, MATE University, Gödöll˝o 2100, Hungary
2Baquba Technical Institute, Middle Technical University (MTU), Baghdad, Iraq
3Institute of Technology, Hungarian University of Agriculture and Life Sciences (MATE), Gödöll˝o 2100, Hungary


Received: April 26, 2021
Accepted: July 3, 2021
Publication Date: July 19, 2021

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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This study aims to examine the compaction nature of shallow homogeneous soil based on the results from confined and unconfined compression tests. A plate sinkage test is employed for the experiments. A big soil bin of bevameter was used for the unconfined test. Meanwhile, for the confined test, a small soil bin was constructed. A plate sinkage diameter of 200 mm was utilized to apply the load. The sensors of the bevameter monitor the applied load and the resulting sinkage. The existence of a firm layer within a certain depth can remarkably influence the load-bearing capacity. This work suggests that for a rigid layer in a certain depth (shallow), the pressure and load-bearing capacity modules increase steeply. The pressure-sinkage and pressure-strain curves consist of varying part, and there is no transition zone as a deep hard layer. Therefore, the load-bearing capacity modulus (k) is altering and not constant. The soil behavior of the unconfined test is similar to the confined test. In addition, the compaction in the unconfined test is not in a conical mass with the plate as it moves, resulting in lateral deformation.

Keywords: Soil deformation, Compaction, Confined test, Plate sinkage test


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