| Author | Chowdhury, Firoz Kabir |
| Call Number | AIT Thesis no. GT-86-21 |
| Subject(s) | Rockfills--Testing
|
| Note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | Substantial amounts of test data on the behavior of sands have been
developed during the past ten years, but a very few published test data
on the cyclic resistance characteristics of dense rockfill materials are
available. Since rockfill materials represent a substantial proportion
of natural deposit and they are often used for rockfill dam construction,
it is important to clarify the liquefaction potential of these types of
materials.
In order to study the undrained deformation and mechanism of pore
pressure build up of rockfill materials subjected to cyclic stresses involving changes not only in magnitude but also in direction, a series of
static cyclic tests was performed using a cubical triaxial apparatus. The
three principal stresses were programmed such that they produce shear
stresses in different directions over the octahedral plane in the three
dimensional stress space.
The results of the study have demonstrated that the stress- strain
& deformation behavior of rock-fill material is similar to dense sand
under cyclic loading conditions. The effects of inherent anisotropy were
noted in the deformation and pore water pressure buildup characteristics.
It was also observed that the specimen prepared by vertical deposition
exhibited stronger resistance to deformation when the cyclic shear stress
was directed horizontally in the octahedral plane than that directed
vertically in the octahedral plane. The test results indicated that the
failure criterion proposed by LADE & DUNCAN (1975) would be the most appropriate failure criterion for describing t he behavior of rock-fill material. |
| Year | 1987 |
| 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) | Towhata, Ikuo |
| Examination Committee(s) | Balasubramaniam, A.S. ;Surachat Sambhandharaksa |
| Scholarship Donor(s) | Government of the Federal Republic of
Germany |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |