Direct / Residual Shear Test System

ShearTrac II

The ShearTrac II system is capable of performing the consolidation and shearing phases of a standard direct or residual shear test under fully automated control with convenient monitoring and instant test results. It consists of a computer-controlled unit using independent, electro-mechanical micro-stepper systems to apply the vertical and horizontal loads to soil specimens.

Applicable Test Standards

• ASTM D2435, D3080
• AASHTO T 216, T 236
• BS 1377-7
• ISO/TS 17892-10
• AS 1289.6.2.2

Features

• Stress (load) or strain (displacement) control
• Tabletop design saves space
• Fully automated via computer or standalone capability for control and data collection
• Full automation of residual shear testing
• Micro-stepper, electronic motor systems offer precise loading and shearing
• More accurate, reliable, and easier to maintain than units requiring hydraulics or air pressure
• Immediately produce reports according to test standards
• Front panel display and keypad for observation and control of the test
• Geo-Net compatibility allows access and control over a computer network
• System flexibility to optionally perform Direct Simple Shear, 1-D Incremental Consolidation, Constant Rate-of-Strain (CRS) Consolidation, and Unconfined Compression testing

Specifications

• Choose load capacity to fit user needs up to 11 kN (2,500 lbs) horizontal & vertical
• Accurate displacement rate control from 0.000006 to 21 mm/min (0.0000003 to 0.8 in/min)
• Vertical travel: 25.4 mm (1.00 in)
• Horizontal travel: +/- 25.4 mm (1.00 in)
• Dimensions: 228 x 560 x 762 mm (9 x 22 x 30 in)
• Weight: 63 kg (140 lbs)
• Shear boxes: 63.5 mm (2.5 in) standard; many options available including special ModCal