Determination of the horizontal (radial) coefficient of consolidation by from oedometer test with horizontal drainage using incremental loading method
The radial (horizontal) coefficient of consolidation (cr) is a key parameter which impacts the total consolidation of the PVD-improved grounds. In practice, the cr value can be interpreted from field tests and laboratory tests. A radial consolidation test (RCT) might be conducted using incrementa...
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| Format: | Theses |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | http://repository.vnu.edu.vn/handle/VNU_123/70343 |
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| Institution: | Vietnam National University, Hanoi |
| Language: | English |
| Summary: | The radial (horizontal) coefficient of consolidation (cr) is a key parameter which
impacts the total consolidation of the PVD-improved grounds. In practice, the cr value
can be interpreted from field tests and laboratory tests. A radial consolidation test
(RCT) might be conducted using incremental loading (IL) method with either a
central drain (CD) or a peripheral drain (PD). The key goals of the research are: (1)
to design and manufacture a multi-directional flow consolidometer (VCT, RCT-PD,
RCT-CD) using incremental loading method; (2) to make a comparative study on the
cr values obtained from the RCTIL using a PD and a CD; (3) to make a comparative
study on the cr values derived from RCT-based method and CPTu-based method.
A desk study is carried out to secure the following: (1) a literature review on
equipment used for the test and existing methods used to evaluate the cr value; (2)
graphical design of a multi-directional flow consolidation cell. Sampling and CPTu
dissipation tests are carried out at sites. Besides the basic physical lab tests, the RCTIL
with a CD and a PD will be performed using the designed consolidation cell under
same condition test. |
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