Rock Uniaxial Compression Testing Machine

The uniaxial compressive strength of rock, abbreviated as compressive strength, refers to the ultimate compressive stress value at which a rock specimen fails under unidirectional compression. It is expressed in pressure units of MPa. R = F/A, where: F is the total pressure at which the specimen fails (N); A is the cross-sectional area of the specimen. Commonly used compressive strength indicators in engineering include dry compressive strength, saturated compressive strength, and compressive strength after freezing.

Measurement: The uniaxial compressive strength of rock refers to the ultimate failure strength obtained when the specimen is compressed in only one direction. This means the rock specimen is placed between the upper and lower pressure plates of a testing machine and compressed until failure, at which point the pressure strength is measured. The measurement is generally conducted using a uniaxial compressive strength apparatus.

This series of products fully complies with the requirements of GB/T2611-2007 "General Technical Requirements for Testing Machines," JJF1103-2003 "Evaluation of Computer Data Acquisition Systems for Testing Machines," JJG139-1999 "Verification Regulation for Tension, Pressure, and Universal Testing Machines," and GB/T16826-2008 "Electro-Hydraulic Servo Universal Testing Machines." It can perform uniaxial compression deformation and compressive strength tests on rocks in accordance with standards such as GB/T50266-2013 "Standard for Test Methods of Engineering Rock Masses."

Main Technical Specifications of Rock Uniaxial Compressive Strength Testing Machine

1 Maximum Test Force: 2000 kN

2 Test Force Measurement Range: 1%-100% FS

3 Relative Error of Test Force Indication: ≤ ±1% of the indicated value

4 Test Force Resolution: 0.01 kN

5 Rated Pressure of Hydraulic Pump: 25 MPa

6 Loading Rate: 0.1 kN/s to 25 kN/s

7 Loading Speed Error: ±5%

8 Rated Flow of Oil Pump: 1.52 L/min

6 Size of Upper and Lower Pressure Plates: φ300 mm

7 Maximum Distance Between Upper and Lower Pressure Plates: 0-340 mm

8 Piston Diameter: φ250 mm

9 Piston Stroke: 30 mm

10 Motor Power: Three-phase 0.75 kW

11 Host Machine Dimensions: 600 × 600 × 1450 mm

12 Oil Source Dimensions: 1070 × 650 × 1400 mm

13 Weight: Approximately 1000 kg

14 Overload Protection: Automatic shutdown when exceeding 3% of full scale