Waste-based biopolymer slurry for 3D printing targeting construction elements

The construction industry consumes significant quantities of mineral-based materials, thereby causing pollution and raw material depletion. To meet projected demands for new buildings, while simultaneously reducing the use non-renewable materials fossil-based carbon, there is therefore a strong drive to develop alternative, renewable replace those currently used in this sector. In present study, we investigate formulation waste-based biopolymer slurries 3D printing as path towards more sustainable elements. was based on xanthan gum binder with lignocellulosic waste fibres particles reinforcement. At same time, flow properties were controlled using combination bio-based plasticiser (glycerol) water. First, amounts water, fillers optimised minimise shrinkage deformation obtaining best possible mechanical after drying. Different reinforcing investigated, it proven that minor addition inorganic (vermiculite) could significantly improve material’s during its final form Furthermore, shown how calcium ions enhance binding effect combining an increase concentration early-age strength printed material. formulations suitable printing. vermiculite improved weathering resistance stability (shrinkage height), which illustrated bench-scale test. • Water-based help combine at architectural scale. Plasticiser, varied achieve balance between flowability properties. Using ionic cross-linker enhances performance binder, improving slurry. small doubles improves performance.