California Bearing Ratio (CBR)
ASTM D1883; AASHTO T 193
HMA-684
6,000lbf load ring, dial indicator, piston
HMA-685
10,000lbf load ring, dial indicator, piston
HMA-685D 10,000lbf load cell, LVT, readout box, piston
Soil Cement
ASTM D1632, D1633
HMA-687
10,000lbf load ring, dial indicator, 4 in platen
HMA-687D 10,000lbf load cell , LVT, Readout box, 4 in platen
Triaxial
ASTM D2850, D4764; AASHTO T 296, T 297
HMA-686
1,000lbf load cell, dial indicator
HM-413
1,000lbf load cell, LVT, Readout box
Unconfined Compressive Strength
ASTM D2166; AASHTO T 208
HMA-681
500lbf load ring, dial gauge, plastic discs
HMA-683
1000lbf load ring, dial gauge, plastic discs
HMA-683D 1,000lbf load cell, dial gauge, plastic discs
COMPONENT SETS
3. Connect to a properly grounded power supply with correct
voltage and amperage to output.
4. Adjust and level the crossarm to the appropriate height.
5. Install required Component Set and any accessories required
for testing.
CONTROLS
1. Main Power On/Off: Includes an indicator light to show
when the power is on
2. Platen Direction: Three-position switch (up, down and off)
includes built-in hesitation to prevent motor damage when
reversing direction
3. Limit Lights: Indicates when upper and lower limits are at-
tained
4. Strain Rate: Three-segment thumbwheel selector (strain
rate calibration chart included)
5. Jog Button: Increases the speed of platen to the maximum
speed of the load frame jack screw (0.1in/min) when the
switch is pushed to the up position.
OPERATING INSTRUCTIONS
WARNING!
Disconnect and lock out power supply when servicing the
unit or installing components.
1. Read all safety and operating instructions before operating
the unit.
2. Power the unit with the Main Power switch (indicator light
will show that the unit is on).
3. Based on the calibration chart (included), set the desired
strain rate for the test using the three-segment thumbwheel
selector.
4. Use the Platen Direction and High-Speed Jog switches to ad-
just the direction and speed of the platen for testing.
5. Center the Platen Direction switch to the off position when
the test is complete.
6. Refer to ASTM and/or AASHTO test methods for specific test
instructions.
Accessories
HMA-94
Rolling Load Frame Cart
