Pivák Adam, Pavlíková Milena, Záleská Martina, Lojka Michal, Lauermannová Anna-Marie, Faltysová Ivana, Jankovský Ondřej, Pavlík Zbyšek
Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague 6, Czech Republic.
Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic.
Materials (Basel). 2021 Feb 26;14(5):1103. doi: 10.3390/ma14051103.
Lightweight Sorel's cement composites doped with coal fly ash were produced and tested. Commercially available foam granulate was used as lightening aggregate. For comparison, reference composites made of magnesium oxychloride cement (MOC) and quartz sand were tested as well. The performed experiments included X-ray diffraction, X-ray fluorescence, scanning electron microscopy, light microscopy, and energy dispersive spectroscopy analyses. The macro- and microstructural parameters, mechanical resistance, stiffness, hygric, and thermal parameters of the 28-days matured composites were also researched. The combined use of foam glass and fly ash enabled to get a material of low weight, high porosity, sufficient strength and stiffness, low water imbibition, and greatly improved thermal insulation performance. The developed lightweight composites can be considered as further step in the design and production of alternative and sustainable materials for construction industry.
制备并测试了掺有粉煤灰的轻质索雷尔水泥复合材料。使用市售泡沫颗粒作为轻质骨料。作为对比，还测试了由氯氧化镁水泥（MOC）和石英砂制成的参考复合材料。所进行的实验包括X射线衍射、X射线荧光、扫描电子显微镜、光学显微镜和能量色散光谱分析。还研究了28天龄期复合材料的宏观和微观结构参数、机械强度、刚度、湿学和热学参数。泡沫玻璃和粉煤灰的联合使用能够获得一种重量轻、孔隙率高、强度和刚度足够、吸水率低且隔热性能大大提高的材料。所开发的轻质复合材料可被视为建筑行业替代和可持续材料设计与生产的进一步发展。
