A FEW CONSIDERATIONS ON TRIAXIAL SHEAR PROPERTIES OF PEAT
| Autor: | Hareyuki Yamaguchi, Keiji Kogure, Yoshinori Ohira, Mutsuo Zushi |
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| Rok vydání: | 1987 |
| Předmět: | |
| Zdroj: | Doboku Gakkai Ronbunshu. 1987:111-120 |
| ISSN: | 1882-7187 0289-7806 |
| DOI: | 10.2208/jscej.1987.382_111 |
| Popis: | In general, the peats classified into soft soils have the spongy fabric which is mainly composed of fibrous organic matters. These organic matters are partly decomposed plants such as leaves and stems. Therefore, the phase constitution and soil fabric of peat are quite distinct from those of inorganic soils which are made up mineral soil particles. Then, it has been said that the fibrous peat has very high compressibility and shows remarkable anisotropic shear properties. In this investigation, the samples of undisturbed fibrous peat were used. These samples contained organic matter in the amount of 70-80% by dry mass. Also, the three kinds of reconstituted samples of wooden chips with different shapes and sizes were prepared for tests. These samples were manufactured by supposing the fibrous peats samples. Both peat and chip specimens, in which ratio (H/D) of length (H) to diameter (D) is fixed at 2.5 and the diameters (D) are from 30mm to 100mm, were set in triaxial cell. After isotropic consolidation, the saturated specimens were sheared under drained and undrained conditions, respectively, and the influences of specimen size, shape and size of chips involved and difference of drainage condition on triaxial shear properties were investigated. It was found from test results that the specimen size, shape and size of organic matter involved and drainage condition strongly influenced the shear properties of peat and wooden chip specimens. |
| Databáze: | OpenAIRE |
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