shear strength of saturated clay


My class and I performed a unconfined compression test which ended up creating a 50 degree angle of failure on our sample of clay. I am unsure about this question could you please help me. 

Can you infer a failure plane orientation based on the envelope ? How does your observed failure plane compare with your envelope?


Soil Mechanics / Geotechnical Analysis Geotechnical Investigations & In-Situ Testing

Asked 25/11/2019 01:29, updated: 11/07/2020 04:28

1 Answer

Votes: 0


This is likely to have been an undrained strength so in that case you could have gotten an Su not friction angle.