Portland cement accounts for a lot more than 95% of all cement produced. To make Portland cement, clay, shale and limestone is floor to your powder and baked in a very kiln. The baked mixture forms clods (clinkers), that happen to be then ground up and mixed with gypsum. The https://mariofqxch.blogofoto.com/60558938/not-known-details-about-manufacturing-of-portland-cement