Geotechnika Konferencia (2015) – Zsolt Szilvagyi, Monika Anka, Peter Hudacsek, Prof. Richard P. Ray

This study compares results from three different testing methods: Resonant Column, Torsional Simple Shear, and Bender Element tests. The resonant column and torsional shear tests were performed on the same hollow cylinder specimen. The bender element test was performed on a triaxial specimen with the same void ratio and confining stress as well as others.
Several effects were studied, among them confining stress, shear strain amplitude and for the bender element, anisotropic confinement. Testing methods and data analysis are discussed in the paper because data interpretation is very important in these tests. Results showed that the shear modulus values were almost identical between the resonant column and torsional shear by varied somewhat with the bender element results laboratory tests and application of these results to static as well as dynamic analysis and design are discussed.

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