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Capping Retainers


Unbounded Cap is used for determining of compression strength of hardened concrete cylinders as alternative method to the sulphur hot capping of concrete cylinder specimens. The pads even out irregularities, distributing the test load uniformly to ensure reliable strength results. Pads are reusable for many tests.


  • AASHTO T22
  • AASHTO T851
  • ASTM C1231