Ring Shear Testing Machine is a versatile and fully automatic ring shear testing machine that benefits from the new low maintenance, efficient and environmentally-friendly Electromechanical.

Ring shear test description

The fully softened strength is used to evaluate the stability of slopes that do not have a pre-existing shear surface. The fully softened shear strength also corresponds to the peak shear strength of a normally consolidated specimen. This test method focuses on the use of a reconstituted specimen to measure the fully softened strength.

The test provides a procedure for performing a torsional ring shear test under a drained condition to determine the fully softened shear strength and nonlinear strength envelope of cohesive soils. 

This test is performed by shearing a normally consolidated, reconstituted specimen at a controlled displacement rate until the peak shear resistance has been obtained.

  

Fully automatic

The Ring Shear Testing Machine can complete the whole test from consolidation to shear stage automatically; selecting the load (stress) for consolidation and a pre-defined shear speed for shearing stage offering a practical and accurate way to obtain reliable results without any need for manual intervention, reducing the risk of human error.

 

Complete stand-alone system

The user interface is based on a large 6” touchscreen color display permitting to start, pause and stop the test, choose the data recording mode, show the readings during the test execution and carry out the transducers calibration. Total control of a single unit, including full test execution is achieved without the need of a PC. It comes supplied with a USB pen drive allowing unlimited storage, TXT format data output. 

Totally new and ingenious software (optional)

Allows the remote control, from a single PC, of multiple machines. Calibrations of displacement transducers and load cells are stored as txt file and easy to recall, up to 10 calibration points can be recorded for each channel.

When the Remote Control mode is used, the PC software becomes the user interface and manages the main functions as well as the channels calibration by linear, polynomial and multi-coefficient curves.

Clarity in results

Test results are saved and displayed in real-time, speeding data capture.

Stainless steel shear boxes  

40 cm2 stainless steel ring shear box fitted with easily removable sintered porous stone.

Results are then processed using Wykeham (WF)’s easy-to-use Geo-Analysis templates, written by experts around international standards allowing you to concentrate on analyzing your materials; not on programing your testing machine.

Main Features:

Fully automatic standalone ring shear soil testing system for performing torsional ring shear test in drained condition to determine the residual shear strength of cohesive soil.

High-performing: Maximum vertical stress 1,200 kPa; Maximum shear stress 1,000 kPa; Test can be perform with vertical load control or at constant volume.

Smart and easy-to-use with removable load cells and displacement transducers. Simplifies testing, maintenance and calibration.

Infinite variable speed from 0.00001 to 1000°/min, with pre-shearing stage selectable and adjustable number of cycles of shearing.

Managed by local user interface with 6” touch screen high resolution color display

Environmentally friendly and quiet with brand new Electromechanical Servo actuation technology

Lightweight and compact, can be placed on a standard bench. Maximizes use of space in your laboratory.

Lightweight and easy to clean. Top-quality techno-polymeric materials offer excellent resistance to corrosion, wear and tear and to chemicals often mixed with soil specimens.

Technical Specifications:

Maximum shear stress: 1,000 kPa

Maximum vertical stress: 1,200 kPa

Specimen dimensions: Internal dia. 70 mm external dia. 100 mm

Test Speed: from 0.00001 to 1000°/min

Sample thickness: 5 mm (various thickness available on request)

Sample area: 40 cm2

Weight approx.: 60 kg.