Manufacturing of cement – The raw materials required for manufacturing of cement are calcareous material like limestone or chalk and Argillaceous material such as clay or shale. The various components of Portland cement are lime 63%, silica 22%, alumina 6%, iron oxide 3%, magnesium oxide 2.5%, sulphur trioxide 1.5%, alkalies 0.5 %. The process of … Continue reading Cement- Manufacturing, Types and Testing