| Author | Polinar, Luzviminda Tiongson |
| Call Number | AIT Thesis no. GT-93-09 |
| Subject(s) | Soils--Testing
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree in
Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GT-93-09 |
| Abstract | The main focus of this study are to establish correlations of strength
characteristic of Shelby tube and split-spoon samples, and compare the strength
and compressibility parameters derived from laboratory and field tests.
Furthermore, the derived strength and compressibility parameters were used in
the prediction of the stability and settlement of full scale test embankments.
Samples from both split-spoon and Shelby tube samplers were tested in
unconfined compression and unconsolidated undrained triaxial tests. Three
oedometer and three Rowe cell consolidation tests were also performed to
determine the compressibility of soil. In the field, four field vane shear tests
and two screw plate load tests were conducted.
The undrained strength from split-spoon samples are slightly higher than
the samples from shelby tube. The ratio between Cv(field} to Cv(lab) ranges from
1. 7 to 11. The Cv values derived from Rowe cell consolidometer are in better
agreement to the field values than those derived from the conventional oedometer
tests. Moreover, the embankment settlement prediction was performed using the
parameters derived from oedometer, Rowe cell, screw plate load tests as well as
the Asaoka's graphical method. The Asaoka's graphical method fits best with the
actual settlement. The settlement prediction using the derived compressibility
parameters from Rowe cell agrees very well with the observed data. Oedometer
yielded the most conservative prediction. Furthermore, the UU and corrected
field vane undrained strengths are in good agreement with the actual strengths
mobilized in the field. The corrected strengths obtained from UC tests gave a
reasonable prediction of the factor of safety. Moreover, the corrected UU
strengths from split-spoon gave a slightly higher prediction. Other methods from
MESRI (1975) and SHANSEP (LADD & FOOT, 1974) were also considered in which
both predicted the embankment stability very well. |
| Year | 1994 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GT-93-09 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Geotechnical and Transportation Engineering (GT) |
| Chairperson(s) | Bergado, Dennes T. |
| Examination Committee(s) | Balasubramaniam, A.S. ;Sugimoto, M.
|
| Scholarship Donor(s) | Government of New Zealand; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1994 |