Triaxial Compression Testing of Iceby Gordon F. N. Cox, US Army Cold Regions Research &, Engineering Lab, Hanover, NH, USA,
Jacqueline A. Richter-Menge, US Army Cold Regions Research &, Engineering Lab, Hanover, NH, USA,
Abstract: An understanding of the confined compressive strength of ice is needed to develop constitutive equations and failure criteria for analytical ice-structure interaction models. Procedures have been refined for performing constant-strain-rate triaxial tests on ice samples. The equipment is designed such that the confining pressure/axial stress ratio remains constant. Sample axial displacements are measured inside the cell on the sample and outside the cell between the cell and the loading piston. In addition to reviewing the development of the equipment and testing procedures, data are presented to illustrate the problems of using outside displacement measurements. In general, direct axial displacement measurements on the sample are essential to obtain accurate test strain rates and ice moduli. This is particularly true for brittle ice at low temperatures, high strain rates, and high confining pressures.
Subject Headings: Triaxial tests | Ice | Compression tests | Offshore structures | Displacement (mechanics) | Failure analysis | Equipment and machinery | Compressive strength | Arctic
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