Wednesday, 10 April 2019

Different Grades Of "ORDINARY PORTLAND CEMENT"


Following are the different grades of ordinary Portland cement.



Grade of cement
Details
33 Grade - Ordinary Portland cement
  (IS - 269-1998 )
·       The compressive strength after 28 days is 33 N/mm2
·       Used for general construction works in normal environmental conditions.
·       Cannot be used where higher grade concrete above M20 is required.

43 Grade - Ordinary Portland cement
  (IS - 8112-2000 )
·       Minimum 28 days compressive strength 43 N/ mm2 .
·       Used for construction of the residential, commercial and industrial building, roads, bridge flyovers, irrigation projects, and other general civil construction works.
·       Suitable for all types of applications RCC, Plastering, masonry, etc. 
53 Grade - Ordinary Portland cement
  (IS - 12269-1999 )
·       Minimum 28 days compressive strength 53 N/ mm2
·       Gives 10 -15 % saving in cement construction and 5 -8% saving in steel
·       Consumption provided higher grades of concrete say M30 and above.
·       Useful for high- rise buildings bridges, flyover, chimneys, and pre- stressed structures where high - grade concrete is required.
·       Give better durability characteristics to concrete.

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