2016 Fiscal Year Final Research Report
Fundamental research of practical use of Super Fine Silica Powder Slurry Materials for countermeasure against liquefaction
| Project/Area Number |
26420485
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Tohoku Gakuin University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Keywords | 地盤改良 / 浸透注入 / 一軸圧縮強さ / 超微粒子球状シリカ系改良材 / 極超微粒性セメント改良材 |
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| Outline of Final Research Achievements |
The method of estimating the unconfined compression strength of solid ground improved with permeation grouting was discussed in which the adsorption phenomena of powder material among grain particles was considered. A set of one dimensional permeation tests and unconfined compression tests on the hundreds specimens were conducted. The density of powder component of improved material in the ground was evaluated by solving the advection equation. The unconfined compression strength was found to be proportional to the density of powder component contained in the soil. The estimation procedure of the unconfined compression strength was proposed based on the test result. The model test using the drums and in-situ test of the grouting were conducted. The estimated unconfined compression strengths were compared with the results of these tests, and the estimation method was found to be promising.
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| Free Research Field |
地盤工学
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