Thermal consolidation of soft Bangkok clay with PVD | |
| Author | Susit Chaiprakaikeow |
| Call Number | AIT Thesis no.GE-04-05 |
| Subject(s) | Soil consolidation Soil consolidation test Clay--Thailand--Bangkok Soils--Thermal properties--Thailand--Bangkok |
| 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 |
| Series Statement | Thesis ; no. GE-04-05 |
| Abstract | This study presents the results of a laboratory investigation of soft Bangkok clay consolidation behavior induced by elevated temperatures combined with PVD with different configurations and locations of PVD and heating point. Laboratory testing programs were conducted on undisturbed and reconstituted sample in both small and large consolidometer with heater and thermal controller. Two types of heaters used in this study. Flexible wire heaters which can raise the temperature up to 90C were utilized to function as heat source with drain and without drain. The other is steel rod heater which elevated the temperature up to 200C. The tests were performed under temperatures of 25, 90 and 200C with thermal and thermal-mechanical paths. Specimens demonstrated volume contraction upon heating. This contraction is dependent on temperature magnitude. At higher temperature higher magnitude of settlements and faster rate of consolidation were achieved. Under thermal path, the settlement effected by temperature is very small compare to the total height of the specimens. However, in thermal-mechanical path the settlement is not so high but the benefit is to accelerate the rate of consolidation. Due to the low value of thermal conductivity of soft Bangkok clay, the temperature profile shows steep reduction of temperature transmission within limited zone around the heat source. Shear strengths increase with increasing temperatures and decreasing of water contents. Moreover, high increasing in shear strengths and high reduction of water contents were achieved within distance of 2 times the radius of heater. The preconsolidation pressure of specimen increased with increasing temperature after heating and cooling cycle because the induced contraction reduce the void ratios and water contents of the specimens. |
| Year | 2005 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-04-05 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Bergado, Dennes T.; |
| Examination Committee(s) | Noppadol Phien-wej; Pham Huy Giao; |
| Scholarship Donor(s) | His Majesty the King of Thailand ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2005 |