(DOC) Meghna Cement Mills Ltd. .docx | Palash Khan
WEBMeghna Cement Mills Ltd. .docx. Cement is the basic material for buildings and civil engineering constructions. Portland cement, the most widely used cement in concrete construction, was patented in 1824. Cement is a fine powdery material untwining silies of calcium, formed out of raw materials consisting calcium oxide, silica, aluminum ...