effects of sample dimensions and shapes on measuring soil–water characteristic curves using pressure plate
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ID: 222886
2015
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Abstract
It is well known that soil–water characteristic curve (SWCC) plays an important role in unsaturated soil mechanics, but the measurement of SWCC is inconvenient. In laboratory it requires days of testing time. For fine-grained clays, it may last for a couple of months using pressure plate tests. In this study, the effects of sample dimensions and shapes on the balance time of measuring SWCCs using pressure plate tests and the shape of SWCCs are investigated. It can be found that the sample dimensions and shapes have apparent influence on the balance time. The testing durations for circular samples with smaller diameters and annular samples with larger contact area are significantly shortened. However, there is little effect of sample dimensions and shapes on the shape of SWCCs. Its mechanism is explored and discussed in details through analysing the principle of pressure plate tests and microstructure of the sample. Based on the above findings, it is found that the circular samples with smaller dimensions can accelerate the testing duration of SWCC using the pressure plate.
| Reference Key |
wang2015journaleffects
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|---|---|
| Authors | ;Min Wang;Lingwei Kong;Meng Zang |
| Journal | journal of neurotrauma |
| Year | 2015 |
| DOI |
10.1016/j.jrmge.2015.01.002
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