Humboldt H-3135/37 Humboldt Vicat Tester - Manual (Page 3)

General
Vicats consist of three main components:
• A frame with base, upright and graduated scale
• A plunger assembly with needle(s), weight(s) and adjustable indicator
• An appropriate mold and glass plate
The equipment meets specifications for the following tests:
H-3050: ASTM C91, C141, C187, C191, C308, C451 and C472
AASHTO T129, T131, T186
H-3060: ASTM C359, AASHTO T185
H-3085: ASTM C807
H-3090:
H-3120:
ASTM C110
H-3133: ASTM C780
H-3135/37: ASTM C472
H-3134:
American Dental Association
Humboldt supplies replacement plungers, needles, weights and molds.
Please refer to the model number above to aid in identifying the proper part(s).
Unpacking
Your equipment was thoroughly inspected before it was shipped and should be
ready to operate as soon as you have completed the set-up procedure. Notify
Humboldt Mfg. Co. or your local agent and file a claim with any carriers involved
if you find any damage to the machine. Unpack all of the equipment carefully to
prevent loss of small items or manuals.
Assembly & Set-up
Place the vicat tester frame on a stable, vibration free surface with space on
either side to prepare the material to be tested. It is recommended the
instrument be checked and adjusted when received, using a reference
material of known consistency for the test.
Operation/Consistency Determination
After molding the sample as directed by the applicable specification, center
the sample under the plunger and bring the two in contact. If adjustment is
necessary, loosen the knurled adjusting screws on the plunger and indicator as
required. Release the plunger within the allotted time after mixing and take a
reading at the specified time (usually 30 seconds for each step).
Use varying percentages of water or fluids to make trial cement pastes or other
specimens to obtain the target consistency. Make each specimen with fresh
material. Calculate and report the required mix values. Refer to the applicable
agency test standard for complete requirements.