| Author | Jiann, Dumn Muh |
| Call Number | AIT Thesis no.1004 |
| Subject(s) | Soil mechanics
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand |
| Publisher | Asian Institute of Technology |
| Abstract | This thesis presents the results of an investigation of subsoil conditions beneath the Bangkok area. A deep borehole is drilled at Rangsit (AIT campus) to a depth of about 88.4 m from the ground surface. A total of thirty
four undisturbed and disturbed soil samples are collected from this borehole by using thin-walled Shelby tubes,3 in. diameter and 24 in. long. General properties of the soils are determined and consolidation tests and unconsolidated-undrained triaxial tests are carried out on clay layers to determine the compressibility and undrained shear strength characteristics of the soil. Direct shear tests are carried out on sand samples to obtain the shear strength parameters for sand.
The test results show that the profile throughout the borehole at Rangsit can be roughly divided into XI layers. Weathered Clay exists from the ground
surface to a depth of about 4 meters. The OCR value is decreasing rapidly and the compressibility of the soil is decreasing with depth. The shear strength is low and is about 2 t./m2. Soft clay lies beneath the Weathered
Zone and has a thickness of about 10 meters. The clay is extremely soft and highly compressible. Stiff clay lies beneath the soft clay, This layer is about 5 m thick. The clay is incompressible and has a high shear strength. Below the Stiff Bangkok Clay, there are Stiff to Hard Clay layers which are
interbedded between sand and sand-gravel layers. The Stiff to Hard Clays are of higher shear strength and low compressibility. The test results from four different sites over the Chao Phraya Plain are also presented here. Finally a comparison of results from different sites is made and conclusions are drawn. |
| Year | 1977 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Balasubramaniam, A.S. |
| Examination Committee(s) | Prinya Nutalaya ;Brenner, R.P. |
| Scholarship Donor(s) | Government of Republic of China |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1977 |