Space Architecture Goes Green: Investigating the Use of Hemp-Fibre Concrete for Martian Structures

The establishment of sustainable human settlements in space requires the development of living and operational spaces capable to withstand the harsh environment of extra-terrestrial locations. To reduce the dependence from Earth resources, we should get used to introducing in-situ production of structural elements. This can include the construction of structural elements with a focus on the highest degree of recycling of materials and resources. Regolith, the loose soil found on the surfaces of Mars and other celestial bodies, presents a potential material for building structures due to its abundance and low cost. This paper explores the use of a regolith simulant-based material with the addition of hemp fibres applied to a simple structure. We analyse the performance of a structure under various loading conditions and propose solutions that can improve its strength and durability. Our results demonstrate that the addition of hemp fibres in the regolith mixture enhances the thermo-mechanical properties of the material, making it a promising choice in structures where building efficiency is paramount. This research contributes to advancing sustainable and innovative solutions for space architecture and supports the goal of establishing a permanent human presence in space.