Manual extrusion test

Various tests were conducted to determine the proportions for the developed mortar, which is composed of mussel shell, metakaolin, and CEM I cement. To identify the right mix composition and ratio, a piping bag was used for manual extrusion to assess the consistency needed before proceeding with printing using the defined material.

The main challenge with this mixture was determining the proportion of plasticizer needed to create a homogeneous, malleable filament that would also solidify quickly once the layers were extruded.