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Regolith-based magnesium oxychloride composites doped by graphene: Novel high-performance building materials for lunar constructions
FlatChem ( IF 5.9 ) Pub Date : 2021-02-06 , DOI: 10.1016/j.flatc.2021.100234
Anna-Marie Lauermannová , Ivana Faltysová , Michal Lojka , Filip Antončík , David Sedmidubský , Zbyšek Pavlík , Milena Pavlíková , Martina Záleská , Adam Pivák , Ondřej Jankovský

In our study, we demonstrated a novel approach in the field of lunar construction materials. The prepared composite materials are based on magnesium oxychloride cement (MOC), which is currently broadly studied and is coming back to the foreground as an ecological alternative to commonly used building materials. To improve the properties of the matrix, graphene was used as an additive. The addition of graphene has previously shown enormous improvement of the mechanical properties of MOC. As a filler, the regolith simulant in the form of powder was used in a high percentage in order to reduce the amount of imported raw materials. The prepared samples were characterized by a wide range of analytical methods, identifying the phase and chemical composition, microstructure, mechanical properties and other. To evaluate the endurance of the materials, they were subjected to thermal treatment simulating the conditions on the Moon. The mechanical properties were only slightly reduced after the thermal treatment even for the samples with a very high content of regolith. The compressive strength reached an unbelievably high value of 67 MPa for the sample with 50 wt% of regolith. The prepared composite materials show the application potential for the lunar infrastructure constructions.



中文翻译:

石墨烯掺杂的基于Regolith的氯氧化镁复合材料:用于月球建筑的新型高性能建筑材料

在我们的研究中,我们展示了月球建筑材料领域中的一种新颖方法。制备的复合材料基于氯氧化镁水泥(MOC),目前已对其进行了广泛的研究,作为常用建筑材料的生态替代品,这种材料又回到了前台。为了改善基体的性能,使用石墨烯作为添加剂。石墨烯的添加先前已经显示出MOC的机械性能的极大改善。作为填充剂,粉末状的硬石膏模拟物被大量使用,以减少进口原料的数量。通过多种分析方法对制备的样品进行表征,鉴定出相和化学成分,微观结构,机械性能等。为了评估材料的耐久性,他们接受了模拟月球情况的热处理。即使对于重灰石含量非常高的样品,热处理后的机械性能也仅略有降低。对于具有50重量%的硬质硅石的样品,抗压强度达到了令人难以置信的67 MPa的高值。制备的复合材料显示出在月球基础设施建设中的应用潜力。

更新日期:2021-02-12
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