1997 Fiscal Year Final Research Report Summary
Mechanism of slaking behavior of Tertiary crushed mudstones and use of mudstones for embankments
| Project/Area Number |
08555122
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Geotechnical engineering
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| Research Institution | NAGOYA UNIVERSITY |
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Principal Investigator |
MATSUO Minoru NAGOYA UNIVERSITY,CIVIL ENG., PROFESSOR, 工学研究科, 教授 (40025937)
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| Co-Investigator(Kenkyū-buntansha) |
NAKASUMI Isao FUDO CORPORATION,RESEARCHER, ジオエンジニアリング事業本部, 研究員
NIWA Tomoki TOHO GAS CORPORATION,RESEARCHER, 新工場建設推進部, 研究員
NODA Toshihiro NAGOYA UNIVERSITY,CIVIL ENG., ASSOCIATE PROFESSOR, 工学研究科, 助教授 (80262872)
NAKANO Masaki NAGOYA UNIVERSITY,CIVIL ENG., ASSOCIATE PROFESSOR, 工学研究科, 助教授 (00252263)
ASAOKA Akira NAGOYA UNIVERSITY,CIVIL ENG., PROFESSOR, 工学研究科, 教授 (50093175)
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| Project Period (FY) |
1996 – 1997
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| Keywords | Slaking / Overconsolidated Soil / Softening / One-dimansional Compression / Triaxixal Compression Test |
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| Research Abstract |
This study is concerned with the slaking behavior of Tokoname mudstones, and to suggest a constitutive equation "the Super-loading surface Cam-clay model, " to describe its behavior. In the experimental study, one dimensional and triaxial compression tests were carried out on crushed mudstone in saturated and dry conditions. A wide range and a narrow range for the size of mudstone pebble were considered. These tests led to the following conclusions : 1) No secondary consolidation was exhibited during tests on specimens with pebbles in the wide range size. 2) The dry samples, although initially with very high strength, exhibited slaking behavior to a larger extent than the saturated ones, when water was added. Progressive failure occurred when the specimen was subjected to constant pressure, even if it was lower than the residual strength. "The Super-loading surface Cam-clay model" is suggested to express every state of soils, normal consolidated, overconsolidated and impossible states.
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