Experimental study of sulfoaluminate concrete based materials : Etude expérimentale d'un béton à base de clinker sulfoalumineux

Abstract : Sulfoaluminate clinker presents a very interesting alternative to Portland clinker regarding sustainable development. An experimental program is undertaken using a sulfoaluminate clinker mixed with micro-ionized gypsum. We carry out series of tests on different mixes: rheology tests, water porosity, expansion tests, compressive strength tests at various ages, measurement of the temperature evolution during the cement hardening, alkalinity measures of the cement paste. An experimental design method is used, varying the water content, the gypsum content through S / A ratio, allowing the optimal design of the concrete mixture proportioning. Then we compare an optimal solution using this binder with a classical formulation based on Portland cement. We also evaluate environmental impact of the optimal solution versus a Portland cement solution.