| Author | Shrestha, Dipak |
| Call Number | AIT Thesis no.GT-92-11 |
| Subject(s) | Shear strength of soils--Testing
|
| 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. GT-92-11 |
| Abstract | Undrained shear tests were performed on soft Bangkok Clay using the true triaxial
apparatus under different modes of shearing, namely conventional triaxial shearing and under
pressuremeter shearing (Ψ) modes. By using the stress-strain relationship obtained from the
tests sheared on horizontal plane (Ψ -plane), the pressure-radius expansion relationship similar
to a pressuremeter test can be generated using Finite Element analysis, Gibson & Anderson
method and Palmer method.
The true triaxial apparatus was modified with an additional pore water pressure probe
to perform undrained tests on clay and a trimming tool for cubical samples was also fabricated.
The anisotropic strength ratio for triaxial compression and triaxial extension is 0.96 for the
soil samples taken at 3.5 m depth with an overconsolidation ratio of 1.79. The shear strength
of the samples sheared on Ψ-plane is found to be lower than that of samples sheared at conventional
triaxial compression and extension conditions. Higher shear strength and the stiffer
stress-strain relationship is obtained in the true triaxial apparatus in comparison to the
conventional triaxial test.
A series of pressuremeter tests were also conducted. The pressure-radius expansion
relationship from the different analyses and the actual test results were compared and it is
found that the curve predicted by Gibson & Anderson method is similar to the actual pressuremeter
test curves implying that the method is reasonable in evaluating the pressuremeter
data. |
| Year | 1993 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GT-92-11 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical and Transportation Engineering (GT) |
| Chairperson(s) | Tian Ho Seah;Honjo, Yusuke; |
| Examination Committee(s) | Balasubramaniam, A.S.;Noppadol Phien-Wej; |
| Scholarship Donor(s) | Government of Austria; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |