This paper deals with research concerning the graphene-doped construction materials, namely with the optimization of the ideal content of the nanoadditive in the final composite. This research was conducted building on the previous studies on use of graphene in magnesium oxychloride cement (MOC). The evaluation of the effect of the graphene nanoplatelets based on their content was performed using various analytical methods as well as mechanical tests. Among the used methods are XRF, SEM, EDS, HR-TEM, XRD and OM. After 28 days of air curing, the mechanical, macro- and micro-structural parameters were studied. One of the main characteristics of the materials was their porosity, which was thoroughly studied in order to determine the influence of the graphene on its drop. This parameter is very important for the MOC-based materials, hence it is directly connected to their resistance to water. The compressive strength of the sample containing 1 wt% of graphene reached value of 99.7 MPa. This sample has shown a massive increase in both compressive (26.8 %) and flexural strength (14.9 %) as well as in the modulus of elasticity (73.1 %) in comparison with the reference sample which did not contain any additives. The developed composite materials show a promising route in the controlled improvement of reactive magnesia-based construction materials properties using carbon-based nanoadditives.

本文涉及石墨烯掺杂结构材料的研究，即最终复合材料中纳米添加剂的理想含量的优化。这项研究是在先前关于在氯氧化镁水泥 (MOC) 中使用石墨烯的研究的基础上进行的。使用各种分析方法以及机械测试对基于其含量的石墨烯纳米片的效果进行评估。使用的方法包括 XRF、SEM、EDS、HR-TEM、XRD 和 OM。空气固化 28 天后，研究了机械、宏观和微观结构参数。材料的主要特征之一是它们的孔隙率，为了确定石墨烯对其液滴的影响，对其进行了深入研究。该参数对于基于 MOC 的材料非常重要，因此，这与他们对水的抵抗力直接相关。含有 1 wt% 石墨烯的样品的抗压强度达到 99.7 MPa。与不含任何添加剂的参考样品相比，该样品的压缩强度 (26.8%) 和弯曲强度 (14.9%) 以及弹性模量 (73.1%) 均显着增加。所开发的复合材料在使用碳基纳米添加剂可控地改善活性氧化镁基建筑材料的性能方面显示出一条有前途的途径。1%) 与不含任何添加剂的参考样品相比。所开发的复合材料在使用碳基纳米添加剂可控地改善活性氧化镁基建筑材料的性能方面显示出一条有前途的途径。1%) 与不含任何添加剂的参考样品相比。所开发的复合材料在使用碳基纳米添加剂可控地改善活性氧化镁基建筑材料的性能方面显示出一条有前途的途径。