In the notes , I can't understand that why as the pore water pressure dissipated , the shear strength of soil will decrease
secondly , why the excess pore water pressure is negative when unloading occur ?
The Attempt at a Solution
I think it's wrong , as the pore water pressure dissipated , the shear strength of soil should increase , am i right ? This is because total stress = effective stress + pore water pressure stress , i assume shear stress = effective stress here . Correct me if i am wrong ...