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C31 Standard Practice for Making and Curing Concrete Test Specimens in the Field

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Revision Date: September 13, 2012
Updated On: October 01, 2012
Editorial Change:
This practice provides standardized requirements for making, curing, protecting, and transporting concrete test specimens under field conditions.

If the specimens are made and standard cured, as stipulated herein, the resulting strength test data when the specimens are tested are able to be used for the following purposes:
  • Acceptance testing for specified strength,
  • Checking adequacy of mixture proportions for strength, and
  • Quality control.

If the specimens are made and field cured, as stipulated herein, the resulting strength test data when the specimens are tested are able to be used for the following purposes:
  • Determination of whether a structure is capable of being put in service,
  • Comparison with test results of standard cured specimens or with test results from various in-place test methods,
  • Adequacy of curing and protection of concrete in the structure, or
  • Form or shoring removal time requirements.

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