Use of In-Space Manufacturing Waste to Strengthen Martian Soil

Since 2014, astronauts have used in-space manufacturing (ISM) with 3D printing technology to create parts for the International Space Station (ISS). 3D printers employ various polymers and other materials to construct space components, producing approximately 33–53% waste. It is hypothesized that discarded polymer waste from 3D printers can be repurposed by melting it and mixing it with Martian soil to enhance its stability and strength. This research uses synthetic Martian soil mixed with various percentages of polymers used in 3D printers. Polymer-soil mortar blocks were prepared in the lab, and compressive strength tests were performed. Polymers can act as binding agents, holding loose Martian soil particles together. The polymer-modified Martian soil has the potential to establish stronger foundations for securing landing spacecraft and constructing habitats and roadways for exploration vehicles; it can stabilize the Martian soil and prevent it from shifting or eroding. Although polymers derived from 3D printer waste can be used in various applications, this research examined only the stability and strength of polymer-modified Martian soil.