LAUSR

Abstract This paper deals with the prospect of recycling dredged sediments in self-compacting mortars (SCM) and their impact on the fresh and hardened properties of SCC pastes/mortars. The raw sediments were dried, sieved to 120 µm, and then thermally treated at 850 °C for one hour. Physical, chemical and mineralogical properties were determined for all materials. Fifteen mortars/paste mixes were prepared using the response surface methodology, based on the variation of three independent parameters: water-to-binder, sediments-to-cement, and volume-of-binder-to-total-volume ratios. The responses were the workability and fluidity of the self-compacting pastes, and the mechanical properties of the self-compacting mortars (compressive, bending strength, and dynamic modulus of elasticity). A numerical optimization was used to select the optimal mixture with the maximum amount of treated sediments, while maintaining self-compactibility properties.