Use of fall-cone flow index for soil classification: a new plasticity chart
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Vardanega, P. J., Haigh, S., & O'Kelly, B. C. (2021). Use of fall-cone flow index for soil classification: a new plasticity chart. Géotechnique, 1-8. https://doi.org/10.1680/jgeot.20.p.132
Use of the Casagrande (plasticity) chart to classify fine-grained soils using Atterberg’s liquid and plastic limits is ubiquitous in geotechnical engineering. This classification is dependent on the thread-rolling and Casagrande-cup tests which are both more operator dependent than the fall-cone liquid limit test. This paper shows that the slope of the data acquired during the fall-cone liquid limit test, (the fall-cone flow index) can be used to redraw the standard plasticity chart thus allowing classification of fine-grained soils to be achieved solely from fall-cone liquid limit data.
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External DOI: https://doi.org/10.1680/jgeot.20.p.132
This record's URL: https://www.repository.cam.ac.uk/handle/1810/316962
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