How Portland Cement Is Made Manufacturing
2020-11-6ensp0183enspPortland cement can be made by following two different processes a dry one and a wet one. Joseph Aspdin first made portland cement in his kitchen stove in England in the 19th century. Lime and silica make up approximately 85 of portland cement. The materials that are commonly used are limestone, shells, chalk, shale, clay, slate, silica sand, and iron ore.