Product Catalog

01.Key features

Test methods

CD tests under direct shear and simple shear conditions
UU tests under direct shear and simple shear conditions
CU tests under simple shear conditions at constant volume
Plate-by-plate tests
Multi-stage shear test

Defined parameters

Peak, critical and residual values of soil shear resistance
Coulomb strength parameters: angle of internal friction and cohesion
Shear modulus at different strains
Dilatancy angle

Capabilities

Automated test mode
Tests in accordance with GOST, ASTM
Consolidation with water saturation directly in the device
Static and kinematic modes of loading with stress and strain control
Measurement of vertical and shear deformations

Design features

Modular design enables tooling change and shear testing by various methods
Free vertical movement of the upper ring during dilatancy
No bending in the specimen during shearing
Water saturation of the sample directly in the device during testing
Convenient gap adjustment with instrumental and visual control
Software and hardware safety system, minimizing the risk of injury to the operator and damage to the system
Control panel for convenience of preparatory operations

02.Specifications

Ultimate vertical load, kN	10
Ultimate shear load, kN	10
Displacement rate, mm/min	0,001 - 25
Vertical displacement, mm	10
Shear displacement, mm	20
Maximum sample diameter, mm	71,4/35; 71,4

03.Design, composition and principle of operation

Short description

Shear apparatus GT 1.2.16 is a desktop frame structure with vertical and horizontal power drives, a vertically movable traverse, a horizontally movable platform and replaceable modules for direct shear and simple shear testing.

Main components

Power device
Direct shear test kit
Simple shear test kit
Measuring system with a set of sensors and electronic equipment
Software GeotekStudio
Control panel
Control cabinet
Table

During shear testing on the consolidation phase, it is necessary to ensure that the vertical load is applied evenly. The load is applied in steps with vertical stress control. During the shear phase, the vertical load is controlled with stress and position control. The shear load is controlled in steps with stress control and kinematically with shear rate control.
Loading is carried out using electromechanical drives with axial force of up to 10 kN, providing static and kinematic load application with a feedback system.
A shear load is applied to the bottom of the specimen. The installation includes a movable platform on low-friction guides, which exclude the possibility of platform rotation during shear. The lower part of the sample is attached to the platform with clamps. The upper part of the sample is attached to a traverse, which has the ability to move vertically to adjust the gap and freely dilate the sample during shear. The gap is adjusted using a micrometer head with a scale.

Test kits

The design of the shear apparatus GT 1.2.16 provides for two types of shear tests: direct shear test; simple shear test.

The installation includes two interchangeable kits. The direct shear test kit consists of a top standard ring and a bottom ring. The upper ring is attached to a vertically movable traverse, the lower ring - to a horizontally movable platform. The set includes a tray for soaking the sample directly in the system.
The simple shear test kits consist of a bottom piston that attaches to a horizontally moving platform, an upper piston that attaches to a vertically moving traverse, and a set of low friction flat wheels. The kit includes a form for preparing and mounting the sample.

Measuring test parameters

The measuring system measures vertical and shear loads, vertical and shearing strains.

The vertical load is measured using a force measuring channel with a measuring range of 10 kN and a resolution of __N.
Measurement of sample strains is carried out using a measuring channel of linear displacements with a measurement range of 10 and 20 mm with a placement capacity of __ and __ mm, respectively.

Electronics

Electronic equipment as part of the Shear apparatus GT 1.2.16 is a complete and cost-effective solution specially designed to solve the problems of data collection and control of power devices with feedback.
GT 6.0.36 block is used to automate the process of loading and measuring test parameters.
Preliminary adjustment of the system is possible using the control panel with the possibility of manual control.
A hardware-software safety system, consisting of a limit value monitoring system, ensures the safety of use and reduces the likelihood of accidental breakdown of the system.

Software

Special software GeotekStudio is used to control the process of triaxial testing and provides the user with a set of preset algorithms for performing complex types of tests.

A complete picture of the testing process is implemented in graphs, sensor readings and calculated physical quantities and is shown using a set of graphical interfaces.

For special tests, the program provides the opportunity to develop your own sequence of commands to perform a unique type of test (write your own algorithm). Such algorithms are developed directly in the built-in environment for the development of algorithms in the GeotekStudio program in a block-graphical way.

04.Additional materials and equipment

Expendable materials

Latex Membranes

Optional equipment

Sample preparation device GT 4.0.7, GT 4.0.1
Vacuum cell GT 4.0.6
Pre-compaction device GT 1.2.5

05.Service

After-sales service

Installation of equipment by our specialists in your lab
Software installation
Running equipment in test mode
Carrying out maintenance
Troubleshooting under warranty

Education

Staff training to work with software and equipment
Providing training material