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MANUFACTURING PROCESS |
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ORDINARY PORTLAND CEMENT
- 43 GRADE
Ordinary Portland Cement 43 grade is
manufactured by inter grinding of high
grade clinker (with optimum C3Scontent)
and right quality gypsum in appropriate
proportions.
PROPERTIES
 Physical Requirements
as per IS
8112-1989 Ambassador Cements Limited
values - Competitors values
Fineness (sqm/kg) 225(min) 325
280
Soundness (mm)
Lechatlier method 10mm (max) 1
1.5
Autoclave (%) 0.8 (max) 0.03 0.05
Setting time
Initial (min) 30 minutes 150 280
Final (max) 600 minutes 260 340
[ FLOW CHART OF THE MANUFACTURING
PROCESS ]
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