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Which clinker compound contributes most to early strength?

  • A.dicalcium silicate
  • B.tricalcium aluminate
  • C.tetracalcium aluminoferrite
  • D.tricalcium silicate

Answer: D

It hydrates quickly and supplies most of the strength gained in the first week. Dicalcium silicate acts far more slowly and contributes chiefly to later strength. The two silicates together dominate the strength of the finished cement.

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