Ordinary Portland cement

Ordinary Portland cement  is the most common type of  cement  that used in general across the world. concrete ,  mortar ,  stucco , and non-specialty  grout are the main ingredients in this cement. Main chemical constituents of ordinary Portland cement Lime (CaO) 60-65 % Silica (SiO2) 17-25% Alumina (Al2O3) 3-8% Iron oxide (Fe2O3) 0.5-6% Magnesia (MgO) 0.1-4% Sulphur trioxide (SO3) 1-3% Alkaline 0-1% Usages of Ordinary portland cement ·          OPC cement is used for general construction purposes where special properties are not required. ·          It is used in reinforced concrete buildings, bridges, pavements, and where soil conditions are normal. ·          It isalso used in concrete masonry units and in addition to that also uses in where the concrete is not subject to special sulphate hazard or the heat generated by the hydration of cement is not objectio