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State whether the following is true or false.
High slag cements are chosen for their early strength.

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

Answer: D

They gain strength slowly at early ages and are selected instead for durability and low heat evolution. Choosing one where rapid formwork striking is needed would be a straightforward mistake. Each cement is chosen against the property the job actually needs.

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