The CBR Test Machine with is designed for performing laboratory evaluation of the CBR value of highway sub-bases and sub-grade and determination of the strength of cohesive materials.
The device is composed of a robust and compact two column frame with adjustable upper cross beam driven by an electromechanical ram with a maximum capacity of 50 kN and a loadring and analog displacement sensor.
The CBR Test Machine designed to load the penetration piston into the soil sample at a constant rate to measure the applied load and piston penetration at predetermined intervals. The ram speed can be set 1 mm/min and 1.27 mm/min by 2 a knob. This main feature allows the user to perform tests complying to BS, EN, ASTM or AASHTO standards with the same machine.
Default Platen rate is 1.27 mm/min also maintained under load thanks to an overpowered electric motor.
For safety, the up and down travel of the lower platen is limited the use of limit switches. Also device is equipped with an emergency stop button.
The measuring system consists of a 50 kN capacity loadring to the upper cross beam to read stability values and the 25 x 0.01 mm Analog Displacement Sensor fitted to the column.