2013 Fiscal Year Final Research Report
A drastic improvement of strength and stiffness of compacted soil by high compaction and its consideration in design and compaction control
| Project/Area Number |
23560597
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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 | Tokyo University of Science |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
塚本 良道 東京理科大学, 理工学部土木工学科, 教授 (50253505)
川辺 翔平 東京理科大学, 理工学部土木工学科, 助教 (30609384)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 盛土 / 変形・強度特性 / 透水係数 / 最大乾燥密度 / 最適含水比 / 最適飽和度 / 締固め特性 |
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| Research Abstract |
To revise the current design and compaction practice for the contraction of embankments of roads, railways and residential areas, river levees, earth fill dams etc by encouraging better compaction and taking into account its effects in design and compaction control, a series of laboratory compaction tests and stress-strain tests on a wide variety of sandy soils, gravelly soils and cement-mixed soils were performed.
It was found that the compaction properties and stress-strain properties of compacted soil is a function of compacted dry density dry density and the degree of saturation during compaction Sr (not the water content w that is usually used in current practice) that does not include the compaction energy level as a variable. Based on the above, a new design and compaction control method controlling and measuring dry density and Sr (not w) is proposed.
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