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The consistency test on cement determines the

  • A.fineness of the ground cement
  • B.expansion caused by free lime
  • C.water content giving a standard paste
  • D.compressive strength at 28 days

Answer: C

Correct answer: water content giving a standard paste

The standard consistency test finds the percentage of water at which a Vicat plunger penetrates to a specified depth, typically 26 to 33 per cent by weight of cement. It is not an end in itself: the setting time and soundness tests are both performed on a paste of standard consistency, so the figure must be determined first for the results to be comparable.

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