Sustainable binders for the creation of a dredge-based tile

Abstract

This paper focuses on the search for sustainable alternative binders to cement. These binders will be used in a dredge-based tile created by the start-up Waterweg. After a literature review, a ground granulated blast furnace slag binder named Eco2cem, a metakaolin-based binder named Topcrete, a sludge from wastewater treatment named Kaumera and lignosulfonate were selected and tested in the experimental phase. In this phase, samples containing these binders are created through either compression or pouring. These samples are analysed based on their flexural strength. The poured samples are generally stronger than the compressed ones. Lignosulfonate and Kaumera cannot fully replace cement, whereas Topcrete showed to be able to fully replace in compressed samples. Poured samples containing Eco2cem as a sole binder showed great results that are similar to the flexural strength values of the control group that still contained OPC. Efforts should now go into the optimization of Eco2cem- and Topcrete-based samples