Question:medium

The major ingredient (51%) in Portland cement is

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Remember the main components of Portland cement: - \(C_3S\) (Tricalcium silicate or Alite) - Major component, early strength. - \(C_2S\) (Dicalcium silicate or Belite) - Second major component, late strength. - \(C_3A\) (Tricalcium aluminate or Celite) - Flash set. - Gypsum is added to slow down the flash set caused by \(C_3A\).

Updated On: Mar 30, 2026

Ca\(_2\)SiO\(_4\)
Ca\(_3\)SiO\(_5\)
Ca\(_3\)Al\(_2\)O\(_6\)
CaSO\(_4\)\(\cdot\)2H\(_2\)O

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The Correct Option is B

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