Computer · Building Materials
At what stage is gypsum added during the manufacturing process of Portland cement to control its setting time?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1While mixing the raw materials before burning
- 2During burning inside the rotary kiln
- 3After the clinker has been completely ground into fine powder
- 4At the beginning of grinding the clinker✓
Correct answer
At the beginning of grinding the clinker
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