Author(s)

S.A. Savidis, C. Vrettos & T. Richter

Abstract

Resonant column and cyclic triaxial testing of tailing dam material S.A. Savidis*, C. Vrettos", T. Richter^ "Technical University of Berlin, Geotechnical Engineering Institute, 1000 Berlin 12, Germany ^Geotechnik und Dynamik Consult GmbH, 1000 Berlin 61, Germany ABSTRACT A series of resonant column and cyclic triaxial tests has been conducted in the frame of the analysis of tailing dam stability during earthquakes. The investigation program for a silty sand from uranium tailings is presented. The paper describes the testing procedures and presents all significant results of these experiments. Single-stage and multi-stage resonant co- lumn tests were performed in order to determine the dependence of shear modulus and damping ratio on confining pressure and shear strain am- plitude. Stress-controlled cyclic triaxial tests on the same material were conducted to determine the increase in pore pressure and the amount of accumulated strain in dependence of the cycles number and t

Keywords