Quality Assured
Worldwide Shipping
Expert Support
Semi-Automatic Uniaxial and Triaxial Test System
Description & Specification
Semi-Automatic Uniaxial and Triaxial Test System
Categories:
Rock Mechanics Testing Equipment
Technical Specifications
The Semi-Automatic configuration for determining the elastic modulus and strength characteristics of rock specimens is based on automatic compression machine for axial loading and manually-operated pump for confining pressure. The 2 systems are operated independently and the failure envelope is obtained by a series of individual tests (single - stage) with manual adjustment of the axial load and manual application of the confining pressure at different levels. It performs either uniaxial or triaxial tests under load/stress control (no strain).
TEST PROCEDURE:
Cell pressure is maintained constant and axial stress is constantly increased by the pressure-compensated proportional valve up to specimen failure (single-stage);
Axial and confining stresses are independently increased isotopically up to a defined level: Axial load is controlled by a special pressure-compensated proportional valve; confining pressure is controlled by the manual pump with pressure maintainer;
Strain values are acquired by data logger.
The procedure above is repeated N times using new specimens at various confining pressure levels. Combining these results it is possible to plot the failure envelope with N points using the dedicated MS Excel spreadsheet.
Technical Specifications:
Lateral pressure system
The unit comprises a hand pump connected to a special oil reservoir, a precision pressure gauge, a pressure maintainer and a flexible hose 3 m long with a 90° quick release coupling. The Low friction manual pressure maintainer is used for maintaining constant the desired lateral pressure in the Hoek triaxial cells.
Max working pressure: 40 MPa
Weight approx.: 15 kg.
-lab-558764076.jpg)
