Co-valorization of sediments incorporating high and low organic matter with alkali-activated GGBS and hydraulic binder for use in road construction

This study investigates the valorization of dredged sediments containing high and low organic matter (OM) content with alkali-activated ground granulated blast furnace slag (GGBS) conventional hydraulic binders (HB). The objective is to develop a sustainable material necessary qualities for road construction. Research conducted on from French port Cherbourg (CHER-ALL sediments) dam in Maurienne Valley France (MOR-ALL sediments), levels OM content, respectively. After determination physico-chemical mineralogical characteristics, CHER-ALL were first valorized using HB then co-valorized carbon footprint alkaline activated byproducts (AAB). alkali activation byproduct was performed chemical activator named NeoliX. AAB utilized treat compare their mechanical performances as well environmental impacts. In terms performance, obtained results revealed that outperformed traditional HB, concerning impacts, have no except transportation. As consequence, has also been co-valorize well. co-valorization these two MOR-ALL) varying degrees facilitates an understanding effects concentration properties. sediment (>17%), regardless proposed mixing proved impede valorization, since 28-day UCS did not exceed 1 MPa. CBR ultimate tensile strength (UTS) testing confirms reported trends experiments. addition, presence significantly decreased properties dredging AAB. However, depending mass percentage (wt%) mix design, it achievable attain required minimum value MPa 30% 70% MOR-ALL sediments, Even if high, can be employed them, demonstrated by encouraging results. quantity depend upon content.