Tag Archive for Tag: Specifications for Portland Cements

Tag: Specifications for Portland Cements Portland Cements

Portland cement, the most common of the modern cements, is made by carefully blending selected raw materials to produce a finished material meeting the requirements of ASTM C150 for one of eight specific cement types. Four major compounds [lime (CaO), iron (Fe2O3), silica (SiO2), and alumina (Al2O3)] and two minor compounds [gypsum (CaSO4  2H2O) and magnesia (MgO)] constitute the  raw materials. The calcareous

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