LITTLE KNOWN FACTS ABOUT PORTLAND CEMENT VS CEMENT.

Portland cement accounts for much more than ninety five% of all cement manufactured. To make Portland cement, clay, shale and limestone is ground to some powder and baked inside a kiln. The baked combination types clods (clinkers), which happen to be then floor up and blended with gypsum. A lot of the raw materials are mined in open up pits. Michig