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Q: _____ is obtained by mixing Portland cement clinker, gypsum and granulated blast furnace slag in suitable proportions.
  • A. High alumina cement
  • B. Portland pozzolona cement
  • C. Ordinary Portland cement
  • D. Portland slag cement
Correct Answer: Option D - Portland slag cement – • This cement is produced by inter grinding cement clinkers, hard burnt gypsum and granulated blast furnace slag in specified proportion. This cement offers – (a) Higher resistance against the attack of sulphur and chloride (b) Better refinement of pore structure. (c) Low heat of hydration. (d) Low cost • The chemical requirement of this cement is same as that of 33 grade of cement. • SSA is 2250 cm2/gm, expansion is limited to 10 mm or 0.8% respectively. • This cement find
D. Portland slag cement – • This cement is produced by inter grinding cement clinkers, hard burnt gypsum and granulated blast furnace slag in specified proportion. This cement offers – (a) Higher resistance against the attack of sulphur and chloride (b) Better refinement of pore structure. (c) Low heat of hydration. (d) Low cost • The chemical requirement of this cement is same as that of 33 grade of cement. • SSA is 2250 cm2/gm, expansion is limited to 10 mm or 0.8% respectively. • This cement find

Explanations:

Portland slag cement – • This cement is produced by inter grinding cement clinkers, hard burnt gypsum and granulated blast furnace slag in specified proportion. This cement offers – (a) Higher resistance against the attack of sulphur and chloride (b) Better refinement of pore structure. (c) Low heat of hydration. (d) Low cost • The chemical requirement of this cement is same as that of 33 grade of cement. • SSA is 2250 cm2/gm, expansion is limited to 10 mm or 0.8% respectively. • This cement find