An Appraisal of Soil Index Tests
| Autor: | F. Medhat, I. L. Whyte |
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| Rok vydání: | 1986 |
| Předmět: | |
| Zdroj: | Geological Society, London, Engineering Geology Special Publications. 2:317-323 |
| ISSN: | 2041-4730 0267-9914 |
| Popis: | The development of liquid and plastic limit tests is reviewed. It is confirmed that the fall cone method is more reliable and reproducible than the Casagrande method for the liquid limit, and this test is adequate for index purposes. The plastic limit has remained effectively unchanged for sixty years and there is no accepted alternative procedure. The Atterberg/Terzaghi rolling bead method is not of adequate reliability and reproducibility. It is proposed that the remoulded shear strength of a fine soil provides a rational basis for index tests. Extrusion and cones have been used to investigate simple methods and it is concluded that both approaches have potential, with the cone test probably being the simpler and more economical approach. Four clay soils were used in the investigation, and it is recommended that a wider range of plastic soils be tested to confirm or otherwise the validity of this approach to index testing. |
| Databáze: | OpenAIRE |
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