Have you ever wondered how things are made? Like Cement, find out how many of the objects we use become the things they are. Watch as “How It’s Made” reveals the methods and materials of Cement.
Why is it called “Portland” cement? Joseph Aspdin, an English mason who patented the product in 1824, named it Portland cement because it produced a concrete that resembled the color of the natural limestone quarried on the Isle of Portland, an island in the English Channel. The Wide World of Cement There are many different […]
The raw materials needed to produce cement (calcium carbonate, silica, alumina, and iron ore) are generally extracted from limestone rock, chalk, shale, or clay. These raw materials are won from the quarry by either extraction or blasting. These naturally occurring minerals are then crushed through a milling process. At this stage, additional minerals are added […]