2013 Fiscal Year Final Research Report
Developments of predictive models for mass transport and mechanical properties considering subsurface temperature
| Project/Area Number |
24760375
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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 |
Geotechnical engineering
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| Research Institution | The University of Tokyo (2013)
Saitama University (2012) |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 物質輸送係数 / 力学パラメータ / 温度依存性 |
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| Research Abstract |
In this study, we aimed at understandings of temperature dependencies on mass transport and mechanical properties of soils, and conducted oedometer tests and solute transport experiments under temperature control using Kaolin and alluvial clays. The oedometer tests using Kaolin clays showed temperature increase enhanced consolidation yield stress, consolidation index, and shear modulus possibly due to an increased cementation between soil particles. Temperature dependency on solute transport characteristic confirmed higher hydraulic conductivity and solute diffusion coefficient for samples at higher temperature. This trend could be expressed by modifying existing predictive models for those parameters. In addition, solute transport experiments using alluvial clays showed that temperature dependency on solute dispersion coefficient was not so significant as compared to retardation factor.
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