2013 Fiscal Year Final Research Report
Evaluation of Microscopic Behaviour for Clay by Using Micro-indenter and its Application
| Project/Area Number |
23780250
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | Iwate University (2013)
Kyushu University (2011-2012) |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | 粘土 / 微視的挙動 / マイクロインデンテーション / 速度効果 / 非排水せん断強度 / 微生物 |
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| Research Abstract |
In this study, the shear strength determined by a micro indentation test was examined focusing on the quantitative evaluation of the micro-scale mechanical behaviour of clay. The comparison of the cohesion obtained from the micro indentation test and unconfined compression test for clay samples indicated in the micro indentation test results by cyclic loading underestimate the cohesion while those by monotonic loading estimate the cohesion accurately. It is noted that the loading rate should be selected according to the clay sample because strength is affected by the rate effect. From these results, it was found that the microscopic mechanical behaviour of clay can be evaluated by mean of the micro indentation test.
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