Rock & Geomechanics

Pseudo‑triaxial Testing Rig

Specifically, this pseudo‑triaxial testing rig studies the physical and mechanical properties of materials such as rock, geotechnical materials, concrete, and asphalt pavement under triaxial stress conditions. Built on a single control platform, the system integrates components with different functions. In terms of test capabilities, it performs a wide range of evaluations, including triaxial static compressive strength and deformation tests, triaxial static tensile strength and deformation tests, shear tests, triaxial creep tests, and triaxial rheological tests. Additionally, the system supports triaxial high‑low temperature and high‑pressure tests, rock core resistivity tests, triaxial gas/liquid seepage tests, triaxial hydraulic fracturing tests, triaxial acoustic emission tests, triaxial ultrasonic tests, triaxial CT scanning tests, and triaxial displacement (oil/water) tests.

True Triaxial Testing Rig

Specifically, this true triaxial test system is a specialized solution developed with electro‑hydraulic servo technology. It can apply principal stresses in three directions to materials such as rock, geotechnical materials, concrete, and asphalt pavement. With all three directions independently or synchronously controllable, the system conducts a variety of tests: triaxial static compressive strength and deformation tests, triaxial static tensile strength and deformation tests, true triaxial shear tests, triaxial creep and rheological tests, triaxial high‑low temperature and high‑pressure tests, triaxial gas/liquid seepage tests, triaxial hydraulic fracturing tests, triaxial acoustic emission tests, and triaxial ultrasonic tests.

High‑temperature & High‑pressure Coupled True Triaxial Testing Rig

This specialized rig simulates a geothermal environment up to 600°C while applying an axial pressure of 4500 kN.

STSA Multi‑Field Coupling Testing Rig

Designed for stress/temperature/seepage/acoustic multi‑field coupling, this rig delivers an axial pressure of 15,000 kN, a temperature range from ‑60°C to +600°C, and supports seepage media including oil, water, CO₂, N₂, and NH₄.

Hydraulic Fracturing Testing Rig

This system achieves an axial pressure of 3000 kN and a fracture pressure of 80 MPa.

Additional Specialized Testing Rigs

Furthermore, SINOTEST offers a range of other rock and material testing solutions: Soft rock testing rig, Stress freezing testing rig, Refractory brick testing rig, and Dynamic Triaxial Testing Rig for Pavement Asphalt Materials (also known as the 03 series).

• High-temperature & High-pressure coupled True triaxial testing rig

It can simulate a geothermal temperature of 600°C with an axial pressure of 4500 kN.

• STSA Multi-Field Coupling Testing Rig

Stress/Temperature/Seepage/Acoustic Multi-Field Coupling Testing Rig: Axial pressure 15000kN; Temp range: -60~+600℃; Seepage media: oil, water, CO₂, N₂, NH₄

• Hydraulic fracturingtesting rig

Axial pressure: 3000kN; Fracture pressure: 80MPa

• Soft rocktesting rig

• Stress Freezing testing rig

• Refractory bricktesting rig

03 Dynamic Triaxial Testing Rig for Pavement Asphalt Materials.

Hydraulic Fracturing Testing Rig

Specifically, this hydraulic fracturing testing rig applies dynamic loads to pavement materials such as asphalt mixtures and cement concrete. In terms of testing capabilities, it measures the mechanical properties of pavement materials under triaxial loading conditions. Furthermore, the system performs dynamic cyclic loading tests, fatigue tests, uniaxial tension and compression tests, high‑low temperature confining pressure triaxial tests, high‑low temperature true triaxial tests, stress path tests, and custom stress path simulations, thereby replicating various complex working conditions.

Technical Specifications

• Maximum Load: 200 kN
• Tensile Test Load: 50 kN
• Dynamic Loading Frequency: 0–25 Hz
• Temperature Range: ‑35°C to +80°C

CT Triaxial Testing Rig

Specifically, this CT triaxial testing rig studies the physical properties of rock materials under triaxial static loading. Using CT imaging technology, it reproduces the internal damage evolution process of rocks and analyzes the generation and extension of internal cracks.

Technical Specifications

• Sample Size: Φ25–Φ40 mm, 25–60 mm³
• Axial Compression Test Pressure Range: 10 MPa – 500 MPa
• Horizontal Test Force Range: 10 MPa – 100 MPa
• Deformation Measurement Range: ≥ 3 mm

Triaxial Soil Rheology Testing Rig

Specifically, this testing rig evaluates the rheological properties of soil mass under triaxial stress conditions. In terms of control modes, it performs both constant load and constant deformation control under constant confining pressure. Additionally, the system can apply dynamic loads with specific frequency and amplitude variations after a period of constant load or constant deformation control. Furthermore, it measures force or deformation changes of the specimen under the aforementioned triaxial loading conditions, as well as pore pressure and pore water flow rate inside the specimen.

Technical Specifications

• Sample Size: 39.1–300 mm
• Sample Types: Soil, coarse‑grained soil, etc.
• Axial Compression Test Force Range (per head): 10 kN – 100 kN
• Axial Compression Test Force Dynamic Frequency: 0.01 Hz – 0.1 Hz
• Dynamic Force Test Waveforms: Triangular wave, trapezoidal wave, cosine wave
• Confining Pressure Range: 0.2 – 2 MPa
• Deformation: Axial 0–20 mm, radial (diameter) ≥ 2.5 mm
• Maximum Pore Pressure: 2 MPa
• Pore Water Flow Rate: 0.01 – 20 mL/min