TY - JOUR AU - Ahmed ZERAOUI PY - 2022/06/07 Y2 - 2024/03/28 TI - Formulation of ternary binders based on flash-calcined sediments and ground granulated blast furnace slag JF - Academic Journal of Civil Engineering JA - AJCE VL - 40 IS - 1 SE - RUGC 2022 DO - 10.26168/ajce.40.1.14 UR - https://journal.augc.asso.fr/index.php/ajce/article/view/2923 AB - Limiting the amount of greenhouse gas CO2  related to the production of cement is a major issue for industrials and the scientific community. The partial substitution of cement by low carbon impact additions allows the reduction of this impact. In this context, the aim of this study is the formulation of a ternary binder based on flash calcined sediment (FCS) and ground granulated blast-furnace slag (GGBS). This also allows the valorization of dredged sediments. The used materials –ordinary Portland cement (OPC), FCS and GGBS– were physically, chemically and mineralogically characterized. Five formulations, one reference mortar RM (100% OPC), one binary formulation (50% OPC/50% GGBS), and three ternary formulations containing variable FCS rates (10%, 15%, 20%), were characterized fresh and hardened. Results showed the incorporation of FCS reduces workability and increases the density. Also, a reduction of the initial setting time and the peak of the heat of hydration were observed. At the hardened state, the mixture containing 10% FCS showed better mechanical strengths than those of RM at 90 days. This was confirmed by the investigation of the mortars porosity. Moreover, the use of FCS in ternary binders could reduce the environmental impact of concrete and enhance its mechanical performance. ER -