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• DYNA Z ... with digital force display
• DYNA Z ...E with electronic sensor Display of read-outs Visual control of the regular rate of loading
DYNA Pull off Tester Determining surface
strength of concrete prior to repair as strength assessment
Measuring adhesive strength of Coatings Carbon fibre
Checking overlays Shotcrete Toppings Repairs
Standards Describe a Rate of Load Increase ASTM D 4541-02, 2002, Clause 5.1.5
ø = 50mm, <2,000 N/s DIN EN 24624, 1992, Clause 3.1
ø = 20mm, <315 N/s DIN EN 1348, 1999, Clause 6.3
Disc 50x50mm, 250 ± 50 N/s DIN EN 1542, 1998, Clause 7.4
ø = 50 mm, 78 ± 20 N/s PrEN 12504-3, in preparation, Clause 6.2
500 ± 200 N/s – not practical ASTM C90-01, Clause 7.4
500 ± 200 N/s DIN 1048, 1991, Clause 6.3.3
ø = 50mm, 100 N/s for ø = 100mm, 400 N/s
ZTV-SIB 90, Annex 2, Clause 4.6 ø = 50 mm Rigid substructure
100 N/sFlexible substructure
300 N/s DIN EN 1015-12 (Mortar) table 2
ø = 50 mm, 6 to 200 N/s
Wide Variety of Wide Variety of RequirementsRequirements
Motor Drive
Ensures compliance with standard load rate
EDm Drive
EGS 1800Power Station
EDm BCBattery holder
Connection andAdaptor cable
Appropriate Test Method
DIA 50 mmCoring down tothe substrate
DIA 20mmWithout coring
Area of stress distributionnot clearly defined
Area 6.25 larger and defined
with test disc
Coring especially important for fibre-reinforced coatings
Interpretation of test modes
Test disc
Adhesive
Coating
Substrate
Failure at Adhesive/Coating
Coating Coating/Substrate
Substrate
Expected results:•Tensile strength of concrete 2.7 to 4.1 MPa (about 8-12% of fc) •For adhesive can be less, 1.0 to 2 MPa
3.1 MPa