Gwóźdź-Lasoń Monika, Brachaczek Wacław, Kadela Marta, Kukiełka Alfred
Faculty of Materials, Civil and Environmental Engineering, University of Bielsko-Biala, Willowa 2, 43-309 Bielsko-Biala, Poland.
Building Research Institute (ITB), Filtrowa 1, 00-611 Warsaw, Poland.
Materials (Basel). 2025 May 5;18(9):2115. doi: 10.3390/ma18092115.
According to EU directives, it is necessary to improve the energy consumption of buildings. Therefore, the aim of this study was to improve the physical properties of foamed concrete produced using plaster mortar. For this purpose, polystyrene granulate with a bulk density of 13 kg/m in amounts of 4, 7, and 10 g per 1 kg of plaster mortar and a foaming agent in amounts of 2, 4, and 6% of the cement mass were used. The density, thermal conductivity coefficient, compressive and flexural strengths, and water absorption coefficient due to capillary action were determined. Based on the obtained results, it can be concluded that the density, thermal conductivity coefficient, and water absorption coefficient due to capillary action decreased with an increase in the content of polystyrene granulate addition, which is a beneficial outcome. However, at the same time, a reduction in mechanical properties was demonstrated. With an increase in the content of the foaming agent, the density and thermal and mechanical properties decreased. The water absorption coefficient due to capillary action increased with the foaming agent content for samples with the addition of polystyrene granulate. However, the coefficient for all the tested samples was lower than that for the base sample.
根据欧盟指令，有必要提高建筑物的能源消耗。因此，本研究的目的是改善用石膏砂浆生产的泡沫混凝土的物理性能。为此，使用了堆积密度为13 kg/m³的聚苯乙烯颗粒，每1 kg石膏砂浆用量分别为4 g、7 g和10 g，以及用量分别为水泥质量2%、4%和6%的发泡剂。测定了密度、导热系数、抗压强度和抗折强度以及毛细作用引起的吸水系数。根据所得结果可以得出结论，毛细作用引起的密度、导热系数和吸水系数随着聚苯乙烯颗粒添加量的增加而降低，这是一个有益的结果。然而，与此同时，力学性能有所下降。随着发泡剂含量的增加，密度以及热性能和力学性能均降低。对于添加了聚苯乙烯颗粒的样品，毛细作用引起的吸水系数随发泡剂含量的增加而增加。然而，所有测试样品的该系数均低于基础样品的系数。
