...) is mobilized about 6000 s. Assuming equal degrees of soil disturbance in the in situ cone penetration test and (σ′_vo, K_o σ′_{vo) consolidated undrained triaxial compression test, and using a 7% increase in su for each tenfold decrease in time to failure}...

...J. A. Sladen Considerable attention has been given to the inference of sand density from indirect tests, particularly the cone penetration test (CPT). Data from tests performed in large-scale chambers have demonstrated that for a given sand there is an approximately unique relationship between CPT...