Add to ORKGCalcium sulfoaluminate (CSA) cements have remarkable environmentally friendly features which can be further enhanced by using industrial wastes and by-products as sources of raw materials. CSA clinkers were obtained by heating for two hours in a laboratory electric oven, at temperatures ranging from 1150° to 1300°C, raw mixes consisting of calcium carbonate or limestone, alumina or bauxite, fluidized bed combustion waste, FGD gypsum and, as additional sources of Al2O3, red mud or pulverized fly ash. The best behaviour in terms of reactants conversion and selectivity degree towards and C2S was obtained when pfa was used instead of red mud. Two high-performance laboratory-made CSA cements (obtained by adding 14-15% of FGD gypsum to two of t...