Performing A Pull-Off Test With Proceq Dy-2; Test Preparation - Proceq DY-2 series Operating Instructions Manual

Measurement ID
The measurement ID may be set by the user. The ID is incremented after each measurement.
• Press the center key to complete the action.
Deleting all saved objects
• Press the center key to delete.
• Press the back button to escape without deleting.

5. Performing a Pull-Off Test with Proceq DY-2

Proceq DY-2 is designed to make it very easy to work according to the various standards for pull-
off testing. It allows the user to specify a load rate and provides a graphical display (via DY-Link
software) of the effective load rate achieved during the test. The standards vary according to the
purpose of the pull-off test and the types of material under test. (See the list in Chapter 2). Typically,
the key test parameters are:
• The size of the test disc
• The load rate applied to the test disc
• The total time allowed for the test

5.1 Test Preparation

Pull-off testing is used on many different types of materials. The actual test parameters should be
taken from the specified standard as noted below.
• Preparation of the test disc. Depending on the material under test, it may be necessary to
roughen the surface using emery paper to ensure good adhesion. It is also advisable to remove
any grease from the surface.
• Gluing the test disc to the surface under test. The type of adhesive will vary with the applica-
tion, but typical adhesives used are:
- Devcon 2 Ton Epoxy
- Loctite 907, Loctite 3430
- Sikadur 30, Sikadur 31
- Araldite Regular/Rapid
• Isolation of the test area by partial coring, or cutting. Typically a coring bit of the appropriate
size (e.g. 50mm) is used to drill through the coating and into the concrete substrate. (E.g. EN
1542 recommends 15mm into the substrate).
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