Below is the detail that defines the grades of cement.
OPC stands for Ordinary Portland Cement and is graded as per their strength. The grade specifies the compression forte (mpa) of the concrete that will achieve after 28 days of setting.
It is formed by a crushing clinker with the appropriate quantity of gypsum to the desired distinction. From time to time certain performance enhancers are further to progress features of concrete made from it.
Produces extremely robust and sound concrete because of the low proportion of alkalis, chlorides, magnesia, and lime in its configuration.
Nearly insignificant chloride content results in limiting corrosion of concrete edifice in intimidating atmospheres.