Dec 20, 2019· The raw material proportioning of CSA cement was determined by three equations (Eqs.,, ).According to literature, the CSA cement clinker modulus was limited to an alkalinity modulus C m (0.95–1.00), alumina–sulfur ratio P (∼3.82), and alumina–silica ratio N (3.00 ∼ ). Because the sulfur content may drastically reduce during the production of CSA cement clinker, the alumina ...