Description

The TRILAB apparatus is designed to characterize rock behavior by enabling detailed stress–strain analysis under in-situ stress and temperature conditions. It allows measurement of key compressive strength parameters—including peak and residual loads, Young’s modulus, Poisson’s ratio, and failure envelopes—and can also generate sample compressibility estimates and peak collapse pressure. Governed by a computerized control interface, the system incorporates a balanced deviatoric triaxial cell equipped with integrated in-vessel strain gauges, a thermal regulation system, an internal load cell, and a lifting device. Axial, pore, and confining pressures are induced and precisely regulated through three high-pressure syringe pumps. The apparatus is modularly engineered to accommodate a wide range of maximum cell pressures and test specimen geometries, and additional testing modules can be integrated to measure further rock properties such as acoustic velocity, acoustic emission and permeability.

 
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