In punlished literature, there are several factors to characterize, identify and predict the soils behaviour like brittleness index, state parameter and equivalent state parameter...... Which is the best parameter?
Please find some interesting references to refer...
Yield strength ratios, critical strength ratios, and brittleness of sandy soils from laboratory tests, Article in Canadian Geotechnical Journal 48(3):493-510 · March 2011
DOI: 10.1139/T10-078
Using state parameter to improve numerical prediction of a generalized plasticity constitutive model,Computers & Geosciences,Volume 51, February 2013, Pages 255-268,https://doi.org/10.1016/j.cageo.2012.06.025
Please find some interesting references to refer...
Yield strength ratios, critical strength ratios, and brittleness of sandy soils from laboratory tests, Article in Canadian Geotechnical Journal 48(3):493-510 · March 2011
DOI: 10.1139/T10-078
Using state parameter to improve numerical prediction of a generalized plasticity constitutive model,Computers & Geosciences,Volume 51, February 2013, Pages 255-268,https://doi.org/10.1016/j.cageo.2012.06.025