Rock uniaxial compression testing machine

The uniaxial compressive strength of rock is referred to as compressive strength, which is the ultimate compressive stress value when a rock specimen fails under unidirectional compression.Expressed in pressure, unit is MPa.R=F/A, where: F is the total pressure (N) when the specimen is crushed; A is the area of ​​the specimen.Commonly used compressive strength indicators in engineering include dry compressive strength, saturated compressive strength, frozen compressive strength, etc.

Determination: The uniaxial compressive strength of rock refers to the ultimate failure strength obtained when the sample is compressed in only one direction. That is to say, the pressure strength value measured when the rock sample is placed between the upper and lower platens of the press and pressurized until the sample is crushed.Its determination is generally carried out using uniaxial compressive strength instruments.

This series of products fully complies with GB/T2611-2007 "General Technical Requirements for Testing Machines" JJF1103-2003Testing Machine Computer Data Acquisition System Evaluation" JJG139-1999 "Calibration Regulations for Tensile, Pressure and * Testing Machines" GB/T16826-2008 "Electro-hydraulic Servo* Testing Machine" requirements, can complete rock uniaxial compression deformation and compressive strength tests in accordance with the requirements of GB/T50266-2013 "Engineering Rock Mass Test Method Standard" and other standards.

Main performance and technical indicators of rock uniaxial compressive strength testing machine

1 Maximum test force: 2000kn

2 Test force measurement range kN 1%- FS

3 Relative error of test force indication value ≤±1% of the indication value

4 Test force resolution 0.01kN

5 Hydraulic pump rated pressure 25MPa

6 Loading rate 0.1KN/S～25N/S

7 Loading speed error ±5%

8 Rated flow rate of oil pump 1.52L/min

6 Dimensions of upper and lower pressure-bearing plates φ300mm

7* Spacing between upper and lower pressure plates 0-340mm

8 Piston diameter φ250mm

9 Piston stroke 30mm

10 Motor power three-phase 0.75 kW

11 Host overall dimensions㎜ 600×600×1450mm

12 Oil source size 1070×650×1400㎜

13 Weight about 1000Kg

14 Overload protection: automatic shutdown when exceeding 3% of full scale