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Mr. Dubey • 52.33K Points
Coach Science 

Q. Gypsum is added to cement clinker to

  • (A) Increase the tensile strength of cement
  • (B) Decrease the rate of setting of cement
  • (C) Facilitate the formation of colloidal gel
  • (D) Bind the particles of calcium silicate
  • Correct Answer - Option(B)
  • Views: 598
  • Filed under category Science
Explanation by: Mr. Dubey 
During cement manufacturing process upon cooling of clinker a small amount of gypsum is added during the final grinding process. Gypsum controls the setting of the cement and if not added the cement will set immediately leaving no time for concrete placing.

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