| Author | Moayed, Hamid Rezaie |
| Call Number | AIT Thesis no.GT-84-23 |
| Subject(s) | Clay--Thailand--PathumThani--Testing
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| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The AIT campus is subsiding in open field areas and suffering differential settlements in built-up areas. In the previous works undertaken to find the effects of subsidence in AIT campus, the presence of a very soft clay layer which has got no resistance to the thrust of Dutch cone was hinted at. The purpose of this study is to locate the exact depth and shape of the very soft clay and map it. The Dutch cone penetration test is used as the main tool to detect the very soft layer. The Criteria for recognition of the very soft clay is the zero cone resistance, Qc, reading. The basic and shear strength properties of the very soft clay is also determined by routine laboratory testing and in-situ tests such as the field vane shear test and the pressuremeter test. The very soft clay is a geological phenomenon which is located at places of great differential settlements. The stiffening in the very soft clay takes place from top to the bottom and is immediately followed by a sandy clay layer. In the very soft layer the water content ranges from 78.4% to 85.7% and the plasticity index varies from 54.5% to 60%. The undrained shear strength determined by vane shear test varies from 2.17 to 2.51 t/m2. |
| Year | 1985 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Geotechnical and Transportation Engineering (GT) |
| Chairperson(s) | Balasubramaniam, A.S. |
| Examination Committee(s) | Bergado, Dennes T. ;Chandra, Sarvesh |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1985 |