Extruding Dredged-Based Material for Concrete Formwork through Rapid-Liquid-Printing (2024-04)¶

The research delves into investigating the printed reusable Dredged-Based Material (DBM) concrete formwork using Rapid Liquid Printing (RLP) technology, revealing its potential impact on existing concrete construction by substituting sacrificial formwork usage. This is an initial exploration of the Rapid Liquid Printing process injecting Dredged-Based-Material material (M1) into the water environment (M2), where the water acts as the suspension and phasechanging accelerator. The Dredged-Based Material injection involves meticulously blended dredged material with bio-based cetyl palmitate. This paper focuses on designing and implementing an extrusion system and the extruder head utilizing stepper motors to control the flow rate, ensuring a stable extrusion state while monitoring the temperature. The Dredged-Based Material for the Rapid Liquid Printing experiment uncovered the challenge and the solution of creating a consistent extrusion through a custom extruder that can maintain the Dredged-Based-Material workability and construct a proportionally scaled prototype to validate the findings and practicality for the Dredged-Based Material Rapid Liquid Printing approach.