TY - GEN
T1 - Investigating the critical state using laboratory ring shear tests
AU - Sadrekarimi, Abouzar
AU - Olson, Scott M.
PY - 2008
Y1 - 2008
N2 - The critical state is the state at which a mass of soil is sheared at a constant volume, constant effective stress, and constant shear stress. This state is reached at an undrained or constant volume condition and at large strains at which all potential net particle reorientation and crushing are complete. Triaxial compression tests are most commonly used to assess critical state conditions; however, as a result of the limited displacement of the device, triaxial testing may not reach a true critical state. In contrast, the ring shear test allows very large shear displacements where all net particle reorientation and crushing are complete. At the large displacements achieved in the ring shear, particle damage and grain crushing can lead to contractive behavior in initially dense materials. These effects result in critical state conditions that can differ significantly between the triaxial and ring shear devices.
AB - The critical state is the state at which a mass of soil is sheared at a constant volume, constant effective stress, and constant shear stress. This state is reached at an undrained or constant volume condition and at large strains at which all potential net particle reorientation and crushing are complete. Triaxial compression tests are most commonly used to assess critical state conditions; however, as a result of the limited displacement of the device, triaxial testing may not reach a true critical state. In contrast, the ring shear test allows very large shear displacements where all net particle reorientation and crushing are complete. At the large displacements achieved in the ring shear, particle damage and grain crushing can lead to contractive behavior in initially dense materials. These effects result in critical state conditions that can differ significantly between the triaxial and ring shear devices.
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U2 - 10.1061/40975(318)68
DO - 10.1061/40975(318)68
M3 - Conference contribution
AN - SCOPUS:84868945410
SN - 9780784409756
T3 - Geotechnical Special Publication
BT - Proceedings of the Geotechnical Earthquake Engineering and Soil Dynamics IV Congress 2008 - Geotechnical Earthquake Engineering and Soil Dynamics, GSP 181
T2 - Geotechnical Earthquake Engineering and Soil Dynamics IV Congress 2008 - Geotechnical Earthquake Engineering and Soil Dynamics
Y2 - 18 May 2008 through 22 May 2008
ER -