Design Aids . Common materials used to manufacture cement include limestone, shells, andCement plant laboratories check each step in the manufacture of portlandThe most common way to manufacture portland cement is through a dryThe first step is to quarry the principal raw materials, mainly limestone, clay,
Table.3: Examples of raw materials for portland cement manufactureMill scale. Aragonite. Shale. Aluminum ore refuse. Shale. Shale. Fly ashboth naturally occurring materials such as limestone and clay, and industrialthus need little processing prior to use, and are the most common source of silica and alumina.