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首页> 外文会议>Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments >Marscrete: A Martian Concrete for Additive Construction Applications Utilizing In Situ Resources
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Marscrete: A Martian Concrete for Additive Construction Applications Utilizing In Situ Resources

机译：Marscrete：一种利用现场资源用于添加剂施工的火星混凝土

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Astronauts in the Apollo Moon landings were provided a prefabricated habitation structure for the short duration on the lunar surface. While the Apollo Lunar Module was designed to house astronauts for only 75 h, a Martian habitat will require a much greater lifespan. For humans to thrive on Mars for any extended period, semi-permanent structures will have to be erected. Such a large and robust habitat would be impractical to transport prefabricated; thus, utilization of local geo-environmental resources is desired. This study presents recent research performed at Northwestern University towards the formulation and characterization of a Martian infrastructure material, called Marscrete. Marscrete is composed, in its simplest version, by sulfur and Martian regolith with a 50-50 mass ratio. Sulfur is plentiful in compounds on and below the surface of Mars, and regolith is a ubiquitous material. Marscrete is the Martian version of traditional sulfur concrete, which is manufactured by melting sulfur and mixing it with sand with approximately a 25-75 mass ratio. Results on compression strength tests, splitting tensile strength, and fracture tests show that Marscrete has significantly better mechanical properties than traditional sulfur concrete and even standard Portland cement concrete. While a generically suitable construction material, Marscrete. when modified with mission-recycled polyethylene fibers, also demonstrates high capabilities for 3D-printing applications-a likely automated construction technique of Martian structures. This paper will discuss the rheological behavior of fresh printable Marscrete, structural performance of the hardened composite, and pose an apparatus to produce 3D-printed Marscrete.
机译：阿波罗登月计划的宇航员在月球表面短期内获得了一个预制居住结构。虽然阿波罗登月舱的设计只能容纳宇航员75小时，但火星栖息地将需要更长的寿命。为了让人类在火星上长时间繁衍生息，必须建造半永久性结构。这样一个大而坚固的栖息地对于运输预制组件是不切实际的；因此，需要利用当地的地质环境资源。这项研究介绍了西北大学最近对火星基础设施材料Marscrete的配方和特性进行的研究。在最简单的版本中，Marscrete由硫和火星表土组成，质量比为50-50。火星表面及其下方的化合物中含有丰富的硫，而表土是一种无处不在的物质。Marscrete是传统硫磺混凝土的火星版，它是通过熔化硫磺并将其与大约25-75质量比的沙子混合而成。抗压强度试验、劈裂抗拉强度试验和断裂试验的结果表明，与传统硫混凝土甚至标准硅酸盐水泥混凝土相比，Marscrete具有显著更好的力学性能。而Marscrete是一种普遍适用的建筑材料。当使用任务回收聚乙烯纤维进行改性时，也展示了3D打印应用的高性能——这可能是火星结构的自动化施工技术。本文将讨论新鲜可打印Marscrete的流变行为、硬化复合材料的结构性能，并提出一种生产3D打印Marscrete的装置。

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