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CALIBRATION
SERVICES, INC.
300 Buttertown Road
Emlenton, PA 16373
724-867-6664
ACCREDITED
724-867-1346 Fax
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Web: www.calibrationinc.com
Email: info@calibrationinc.com
ISO 17025-2005
Laboratory Accreditation Bureau
CERT # L 1174 |
Specializing
in Service, Calibration, Retrofit, and Sales
of Physical Testing Equipment
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QUICK PROCEDURE FOR TESTING CONCRETE
CYLINDERS USING A FORNEY ™
TESTING MACHINE
WITH A SPX ™ PUMP AND A TEST PILOT DIGITAL
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Written by: William W. Stump
III
President Calibration Services, Inc.
December 20, 2007
1.
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Turn
on digital. Allow to warm up for 15 Minutes prior
to use. |
2.
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Insert
the bottom of the specimen into the bottom pad
base and center. Place the top pad base on the
specimen. Insert the entire assembly into the
testing machine and center it. |
3.
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If
you are testing 4 X 8 samples, the digital is
currently set up for this size. You can then proceed
to step 5. If you are testing another size sample,
proceed to step 4. |
5.
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Start
the pump and move the piston in "RAPID ADVANCE"
until you have ¼" of daylight. IMMEDIATELY put
the valve into "METERED ADVANCE". |
6.
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Check
the centering of the sample. Press the "ZERO"
key. |
7.
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Position
the valve into "RAPID ADVANCE" and preload
the sample to about 6000 lbs. Put the valve back
into "METERED ADVANCE". |
8.
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Wait
several seconds until the pump gets up to speed.
The test should start climbing at the appropriate
rate. If you want to know the rate, press the
"STRESS" button TWICE and the rate
light will illuminate showing the rate of loading
in PSI per Second. |
9.
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If
it is too slow, turn the star shaped know Counter
Clockwise "CCW", if it is too fast turn it Clockwise
"CW". Once you have the rate set, push the "Force"
button again to follow the load on the digital.
Once you have set the speed, you should not have
to do this again for subsequent samples. |
10.
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When
the sample fails, put the valve into "RETRACT"
and shut off the pump. Press the "PEAK"
button to see the peak load in lbf. Press the
"STRESS" button and then press the "PEAK"
button again to see the peak stress. After you
have written down the results, press the "FORCE"
button to return to a force reading. |
11.
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Proceed
to step 2 to start your next test. |
CALIBRATION
SERVICES, INC.
300 Buttertown Road
Emlenton, PA 16373
(724) 867-6664 or (800) 793-1870
FAX (724) 867-1346
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