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4. K0 (K-Zero) Rock Test Equipment

K0 (K-Zero) Rock Test Equipment

Kzero conditions (or specifically the coefficient of earth pressure at rest) in the context of laboratory testing are where a sample is required to be loaded whilst keeping the area of the sample a constant.  Kzero conditions are maintained in a n oedometer by design due to the radial constraint, however in an oedometer the radial stress cannot be measured therefore the K-zero condition is not measureable.  A Kzero test in a triaxial cell allows Kzero conditions to be applied and measured. The Kzero module allows you to run two tests. 

• Test 1: Kzero using ramp RADIAL STRESS with direct radial transducer measurement: Uses a direct reading of the specimen diameter to enable the test control to maintain zero diameter change.
  
• Test 2: Kzero using ramp RADIAL STRESS with back volume change measurement: Uses the change in volume of the specimen to calculate a theoretical new specimen height thus ensuring the diameter change remains zero.
  

Please note: Some apparatus may require additional components or software modules to perform certain tests.

The following rock test equipment can perform the K0 (K-Zero) rock test:-

Unsaturated Back Pressured Shear Box
for k0 (k-zero) rock test

Hydraulic Load Frames for Rock
for k0 (k-zero) rock test

1000kN (1MN) / 2000kN (2MN) Static Compression Only Loadframe
for k0 (k-zero) rock test

Environmental Triaxial Testing System
for k0 (k-zero) rock test

Variable Direction Dynamic Cyclic Simple Shear
for k0 (k-zero) rock test

GDS Large Automated Direct Shear System (300mm)
for k0 (k-zero) rock test

Dynamic Back Pressure Shearbox
for k0 (k-zero) rock test

Back Pressure Shearbox - High Pressure
for k0 (k-zero) rock test

Interface Shear Tester
for k0 (k-zero) rock test

Environmental Triaxial Automated System
for k0 (k-zero) rock test

GDS Small-Strain Hollow Cylinder Apparatus
for k0 (k-zero) rock test

GDS Automatic Oedometer System
for k0 (k-zero) rock test

GDS Shearbase System
for k0 (k-zero) rock test

GDS Back Pressured Shear Box
for k0 (k-zero) rock test

GDS Electro-Mechanical Dynamic Cyclic Simple Shear
for k0 (k-zero) rock test

GDS Constant Rate of Strain Cell (CRS in Load Frame type)
for k0 (k-zero) rock test

GDS Consolidation Testing System (Rowe and Barden Type)
for k0 (k-zero) rock test

GDS Large Diameter Cyclic Triaxial Testing System
for k0 (k-zero) rock test

Advanced Dynamic Triaxial Testing System
for k0 (k-zero) rock test

GDS Enterprise Level Dynamic Triaxial Testing System
for k0 (k-zero) rock test

Hydraulic Load Frames for Soil
for k0 (k-zero) rock test

Virtual Infinite Stiffness Load Frames
for k0 (k-zero) rock test

Triaxial Automated System (Load Frame type)
for k0 (k-zero) rock test

Triaxial Testing System (Automated Stress Path type)
for k0 (k-zero) rock test