Fic Stanisław, Szewczak Andrzej, Barnat-Hunek Danuta, Łagód Grzegorz
Faculty of Civil Engineering and Architecture, Lublin University of Technology, 40 Nadbystrzycka Str., Lublin 20-618, Poland.
Faculty of Environmental Engineering, Lublin University of Technology, 40B Nadbystrzycka Str., Lublin 20-618, Poland.
Materials (Basel). 2017 Jan 6;10(1):44. doi: 10.3390/ma10010044.
The article presents a proposal of a model of fatigue destruction of hydrophobised ceramic brick, i.e., a basic masonry material. The brick surface was hydrophobised with two inorganic polymers: a nanopolymer preparation based on dialkyl siloxanes (series 1-5) and an aqueous silicon solution (series 6-10). Nanosilica was added to the polymers to enhance the stability of the film formed on the brick surface. To achieve an appropriate blend of the polymer liquid phase and the nano silica solid phase, the mixture was disintegrated by sonication. The effect of the addition of nano silica and sonication on changes in the rheological parameters, i.e., viscosity and surface tension, was determined. Material fatigue was induced by cyclic immersion of the samples in water and drying at a temperature of 100 °C, which caused rapid and relatively dynamic movement of water. The moisture and temperature effect was determined by measurement of changes in surface hardness performed with the Vickers method and assessment of sample absorbability. The results provided an approximate picture of fatigue destruction of brick and hydrophobic coatings in relation to changes in their temporal stability. Additionally, SEM images of hydrophobic coatings in are shown.
本文提出了一种疏水陶瓷砖（即一种基本的砌筑材料）疲劳破坏模型的建议。用两种无机聚合物对砖表面进行疏水化处理：一种基于二烷基硅氧烷的纳米聚合物制剂（1 - 5系列）和一种硅水溶液（6 - 10系列）。向聚合物中添加纳米二氧化硅以增强在砖表面形成的膜的稳定性。为了使聚合物液相和纳米二氧化硅固相达到适当混合，通过超声处理使混合物分散。测定了添加纳米二氧化硅和超声处理对流变学参数（即粘度和表面张力）变化的影响。通过将样品循环浸泡在水中并在100℃温度下干燥来诱导材料疲劳，这导致水的快速且相对动态的运动。通过用维氏方法测量表面硬度变化和评估样品吸水性来确定湿度和温度的影响。结果提供了砖和疏水涂层疲劳破坏与其时间稳定性变化相关的大致情况。此外，还展示了疏水涂层的扫描电子显微镜图像。
