Relationship Between Drained and Undrained parameters
Relationship Between Drained and Undrained parameters
(OP)
Hello there, I have a question to for you guys out there, how do we work out the Effective c' and phi' from a undrained triaxial with PWP. Is there a formula i can use.
Thanks
Thanks





RE: Relationship Between Drained and Undrained parameters
sin(phi)' = tan b where b is angle of line of q-p' plot(two dimensional - sigma1 and sigma3)
c' = a/cos(phi)' where a is intercept of q-p' plot.
Octahedral stresses (sigma1, sigma3, sigma2) is different.
RE: Relationship Between Drained and Undrained parameters
RE: Relationship Between Drained and Undrained parameters
RE: Relationship Between Drained and Undrained parameters
RE: Relationship Between Drained and Undrained parameters
RE: Relationship Between Drained and Undrained parameters
It might caused by disturbance.
Another reason might be the stress history of the soil. Is it highly overconsolidated? The test must be carried out properly.