MANUFACTURING PROCESS
 
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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