Firoozkuh Sand: Introduction of a Benchmark for Geomechanical Studies

The large-strain undrained behavior of Firoozkuh No. 161 sand is studied. It is observed that type of sand behavior is significantly affected by relative density (i.e., void ratio), the initial value of mean principal effective stress, and the shear mode. For samples subjected to the mode of triaxial compression, a clear steady-state line in both the q-p and e-p planes was obtained. For extension tests, dilation was not terminated at the end of...