Use of fall-cone flow index for soil classification: a new plasticity chart

Use of the Casagrande-style plasticity chart to classify fine-grained soils using Atterberg's liquid and plastic limits is ubiquitous in geotechnical engineering. This classification dependent on thread-rolling Casagrande-cup tests, which are both more operator than fall-cone limit test. paper shows that slope data acquired during test (the flow index) can be used redraw chart, thus allowing achieved solely from data.