Rock Mechanics
John W. Handin Laboratory for Experimental Rock Deformation

500-ton servo-controlled, electrohydraulic testing machine capable of deforming 2.5 x 6 cm cylindrical specimens in triaxial compression under controlled loading/deformation histories and Argon confining pressures and liquid pore fluid pressures to 1200 MPa and temperatures to 1200 C.

150-ton servo-controlled, electrohydraulic testing machine capable of deforming samples up to 2.5 cm diameter under confining pressures to 300 MPa and temperatures to 300 C. The system has a pore-fluid flow-through capability. Both digital and analog data acquisition.

200-ton, variable strain-rate, triaxial-compression apparatus for tests on specimens up to 5 cm diameter and 20 cm length at strain rates from 10-3 to 10-8 sec-1at confining and pore-fluid pressures to 300 MPa at room temperature. System is capable of concurrent elastic-wave velocity measurement and measurement of permeability using the transient-pulse technique.

Two 100-ton, variable strain-rate, triaxial compression systems for deforming 10 x 20 cm cylindrical specimens at confining and pore pressure to 70 MPa, temperatures to 150 C, and strain rates from 10-3 to 10-9 sec-1.

Variable strain-rate, triaxial compression apparatus for deformation of 1 x 2 cm cylindrical specimens at confining and pore pressures to 1000 MPa, temperatures to 1000 C and strain rates from 10-3 to 10-8 sec-1.

Two 10-ton, variable strain-rate, triaxial systems (Heard rigs) for deformation of 2.5 x 6 cm specimens at confining and pore pressures to 300 MPa, temperatures to 300 C and strain rates from 10-3 to 10-8 sec-1. One system is capable of measuring permeability using the transient-pulse technique.

Two Griggs-Blacic solid-pressure medium systems for deformation of 6 x 15 mm specimens at confining pressures to 2000 MPa, temperatures to 1500 C, and strain rates from 10-3 to 10-8 sec-1.

Griggs, solid-pressure-medium, multiple anvil "cubic" apparatus capable of confining pressures to 7000 MPa and temperatures to 1600 C.

 
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