OPC 43 Grade

OPC 43 Grade at PARASAKTI CEMENT is produced Conformed to the Indian Standards Specifications as per IS : 8112 - 1989

The cement that is prepared by grinding Portland Cement Clinker and suitable proportions of Gypsum is called as Ordinary Portland cement. Small additions of performance improvers such as Fly ash, Blast furnace slag etc are permitted.

The Cement mortar that is prepared in 1: 3 proportions using standard sand (as per IS : 650) and tested at standard laboratory conditions and gains the compressive strength of not less than 43 MPa after 28 days, then the Cement is said to be 43 Grade Ordinary Portland Cement.

Comparative Analysis Of Parasakti Cement with BIS Specifications OPC 43 Grade

Minimum Compressive Strength at

Description IS Requirement Parasakti Results
3 Days (72 ± 1hour) Not less than 23 MPa 32-34 MPa
7 Days (168± 2 hour) Not less than 33 MPa 42-44 MPa
28 days (672±4 hour) Not less than 43 MPa 54-56 MPa

Setting Time in Minutes

Description IS Requirement Parasakti Results
Initial Setting time Not less than 30 Minutes 130-160 Minutes
Final Setting time Not more than 600 Minutes 230-260 Minutes


Description IS Requirement Parasakti Results
By Blaine method Not less than 225 M2/Kg 265-275 M2/Kg


Description IS Requirement Parasakti Results
Le-Chatlier method Not more than 10mm 1-2 mm
Autoclave method Not more than 0.80 percent 0.05- 0.2 %

Applications :

Can be used for Pre Stressed Concrete Sleepers, General Civil Construction works like Residential, Commercial, Industrial Buildings, Bridges, Flyovers, Culverts etc.