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The PosiTest AT 50 mm C1583 Kit is designed to
measure tensile strength of concrete surfaces and the
bond strength or tensile strength of concrete repair and
overlay materials by direct tension (Pull-Off Method), in
accordance with ASTM C1583.
Addendum to Instruction Manual v. 5
AT
50 mm C1583 Kit
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Steps to Perform a Pull-Off Test
1 - Dolly & Surface Preparation
Ensure the steel dolly (disk) is clean and free of
debris. Remove all surface contaminants and loose
or deteriorated concrete from surface.
2 - Prepare Test Specimen
Using the included 50 mm
diamond-impregnated core bit
(barrel), drill a circular cut
perpendicular to the surface.
Per ASTM C1583 10.1, drill to
a depth of at least 10 mm (0.5
inches). For tests of repair or
overlay materials, drill to at
least 10 mm (0.5 inches) below
the concrete-overlay interface.
Measure the diameter of the test specimen in two
directions at right angles to each other and record
the average diameter, in accordance with ASTM
C1583.
Remove any standing water and debris from the
surface and allow to dry.
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3 - Glue and Dolly Application
Attach the steel dolly to the test specimen using
epoxy adhesive. Allow the adhesive to cure per the
manufacturer’s instructions taking care to ensure the
adhesive does not enter the cut.
ASTM C1583 specifies an ASTM C881 Type IV,
Grade 3 epoxy. While the included ResinLab epoxy is
suitable for many applications, it does not meet this
specific requirement.
4 - Pull-Off Test
a) Ensure the PosiTest AT 50 mm
C1583 stand-off is attached
to the actuator.
b) Conduct pull-off test in
accordance with PosiTest AT
instruction manual.
5 - Analysis of Test Result
Examine and report test results
according to ASTM C1583.
NOTE:
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www.defelsko.com
This manual is copyrighted with all rights reserved and may not be
reproduced or transmitted, in whole or part, by any means, without
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manual is accurate. DeFelsko is not responsible for printing or
clerical errors.
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DeFelsko's sole warranty, remedy, and liability are
the express limited warranty, remedy, and limited
liability that are set forth on its website:
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