Two CD triaxial tests are conducted on identical specimens of the same sand. Both specimens are initially consolidated hydrostatically to 50 kPa; then each specimen is loaded as shown. Specimen A failed when the applied ∆σ1 was 180 kPa. Make the necessary calculations to

(a) Plot the Mohr circles at failure for both tests

(b) Determine ∅' for the sand.?

Transcribed Image Text:

Initial conditions: At failure: |Ao, = 180 kPa в 50 kPa | 50 50 | 50 kPa 50 Aog =ao, 50 -Ara 50 50