Determination of consistency limits of clay by means of extrusion tests
(2015) XVI ECSMGE Geotechnical engineering for infrastructure and development — Location: Edinburgh (13.September.2015)
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- Abstract
- The liquid limit of clay is commonly determined through the Casagrande test or the fall-cone test, while the plastic limit is determined through the hand rolling method. The greatest issue with some of these techniques is their low repeatability and operator de- pendency. In order to minimize those issues, an indirect-extrusion based technique was evaluated as an alternative method to determine both consistency limits. The experimental work was carried out on mixtures of kaolin and bentonite to cover a wide range of plasticity. The results suggested that there is a specific extrusion pressure linked to each consistency limit and that the results are repeatable. The liquid limit obtained through the extrusion method closely matches the results of the fall-cone test. Similarly, the plastic limit out of extrusion closely matches the results of the hand rolling method.
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Verástegui Flores, R. D., & Di Emidio, G. (2015). Determination of consistency limits of clay by means of extrusion tests. Proceedings of XVI ECSMGE Geotechnical engineering for infrastructure and development, p. 3431-3436. https://hdl.handle.net/2078.5/223744