1.

What is the percentage of CLINKER in PC?(a) 2-3%(b) 4-6%(c) 2-6%(d) 3-5%I had been asked this question during an interview.The doubt is from Manufacture of Portland Cement in division Cement of Concrete Technology

Answer»

Correct choice is (c) 2-6%

The BEST I can EXPLAIN: PORTLAND cement is made by mixing substances CONTAINING CaCO3 with substances containing SiO2, Al2O3, Fe2O3 and heating them to a clinker which is subsequently ground to POWDER and mixed with 2-6 % gypsum.



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