Space agencies and most recently private enterprises around the world plan to build structures for commercial operations on the Moon. However, we have no design experience or building standards that apply to this "extreme" environment. Understanding the behaviour of viable building materials under lunar conditions is one important step. This paper explores the characteristic of a waterless concrete utilizing of a lunar soil simulant "cemented" together by a polymer. Mixing polypropylene powder with the simulant created a dry mix that was filled into a steel form, compacted and slowly heated to melting temperature. Discussed are the formwork design and the innovative method used to produce a secondary compaction while the polymer liquidised. After each experiment, the density, compressive, and flexural strengths of the resulting hollow beams were measured and compared to assess their sensitivity to changes in mix-design, compaction, and heating temperature. The results indicate significant compressive and tensile strengths for the 10% polypropylene polymer samples. The unexpected lower tensile strength from 3-point beam bending test highlights the need for further improvements.
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