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Concrete

Unbonded capping pads

AASHTO T22 | AASHTO T851 | ASTM C1231
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General description
General description
This method is used as alternative to the sulphur hot capping of concrete cylinder specimens. The system consist of two alloy steel cap retainers and two 12.5 mm thick neoprene pads which are in contact with the upper and lower concrete surfaces. The pads even out irregularities, distributing the test load uniformly to ensure reliable strength results. Pads are reusable for many tests.

Important note
The total thickness of capping retainers and neoprene pads for dia. 150 mm (6”) specimens is 50-55 mm which has to be added to 300 or 6” specimen height summing to 355 mm approx. Verify the vertical clearance of your compression tester before testing and, in case of difficulty, get in touch with our service dept. to find a solution.
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Ordering info

Capping retainers
50-C0122/A4 
Capping retainers (couple) for 4” dia. concrete cylinders

50-C0122       
Capping retainers (couple) for 150 mm (6”) dia. cylinders

50-C0122/B  
Capping retainers (couple) for 160 mm dia. cylinders

Neoprene pads
50-C0122/A44
Neoprene pads for 4” dia. cylinders 70 Shore A. Set of two.

50-C0122/2     
Neoprene pads for 6” dia. cylinders 60 Shore A. Set of two.

50-C0122/3      
Neoprene pads for 6” dia. cylinders 70 Shore A. Set of two.

50-C0122/4      
Neoprene pads for 160 mm dia. cylinders. Set of two.

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