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State whether the following is true or false.
Grinding cement ever finer improves it without limit.

  • A.False only at small scales
  • B.True
  • C.False
  • D.True only at large scales

Answer: C

Beyond a point the extra energy is not repaid, the water demand rises and the cement becomes prone to pre-hydration in storage. Fineness is optimised rather than maximised. Every property has an optimum rather than a direction of improvement.

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