Thermally induced consolidation and volume changes of soft Bangkok clay | |
| Author | Pina Rujivipat |
| Call Number | AIT Thesis no.GE-03-08 |
| Subject(s) | Clay--Thailand--Bangkok Soil consolidation test Clay--Effect of temperature on |
| Note | A thesis submitted in partial fulfillment of requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-03-08 |
| Abstract | This study presents the results of a laboratory investigation of soft Bangkok clay behavior induced by elevated temperatures. A conventional oedometer modified with heater and thermo-controller was employed. Consolidation tests on normally consolidated specimens revealed the irreversible non-linear volume contraction upon heating because of induced sliding between clay particles. In addition, this contraction is independent of stress level. The preconsolidation pressure of normally consolidated specimens increases with increasing temperature after heating and cooling cycle because the induced contraction make specimens compact and can resist more pressure. The overconsolidated specimens were also conducted and revealed small volume contraction. This contraction decreases with increasing overconsolidation ratio and become an expansion at high overconsolidation ratio. The decrease of contraction occurs because of the expansion of pore water and clay particles induced by heating. However, the change in volume of overconsolidated specimens also depends on the stress variation: the reloading specimens tend to contract while the unloading specimens tend to expand. The preconsolidation pressure of overconsolidated specimens decreases with increasing temperature because the reduction of shear resistance between clay particles make specimens can resist less pressure. The consolidation characteristics are unaffected by temperature. From some results of the tests, the permeability was calculated and revealed that the permeability increases with increasing temperature due to decreasing viscosity of water due to heat. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology.--Thesis ; no. GE-03-08 |
| 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) | Government of Japan |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2004 |