Ivanič Andrej, Lubej Samo
Faculty of Civil Engineering, Transportation Engineering and Architecture, University of Maribor, Smetanova ulica 17, 2000 Maribor, Slovenia.
Polymers (Basel). 2022 Mar 24;14(7):1312. doi: 10.3390/polym14071312.
This paper presents a study of PVC-P waterproofing membrane Specimens. The Specimens were taken from different segments of a flat roof after a service life of 11 years. The reason for analysing the condition of the Specimens was the apparent degradation of the waterproofing, which no longer guaranteed the watertightness of the roof. The analysis of the performance of the Specimens was based on the control of the mechanical properties, which were compared with the declared values. The mechanical properties of the degraded PVC-P waterproofing membranes with a polyester mesh backing, which are prescribed by the standards, do not usually deviate from the declared properties. This often poses a problem for liability and warranty claims due to the poor quality of the waterproofing membrane. There may be several causes of degradation of PVC-P. For this reason, in this paper, we present the possibility of controlling the properties of PVC-P waterproofing membranes using cyclic dynamic fatigue, microstructure analysis using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results show that the cause of the deterioration of the PVC-P waterproofing membranes is often related to dehydrochlorination of the polymer. However, the deterioration of the mechanical properties of the PVC-P waterproofing membranes can be successfully demonstrated by cyclic dynamic fatigue.
本文介绍了对PVC-P防水卷材试件的一项研究。这些试件取自一个平屋顶在使用11年后的不同部位。分析这些试件状况的原因是防水卷材明显出现老化，已无法保证屋顶的防水性。对试件性能的分析基于对机械性能的控制，并将其与宣称值进行比较。标准规定的带有聚酯网背衬的老化PVC-P防水卷材的机械性能通常与宣称性能没有偏差。由于防水卷材质量不佳，这常常给责任和保修索赔带来问题。PVC-P老化可能有多种原因。因此，在本文中，我们介绍了利用循环动态疲劳控制PVC-P防水卷材性能的可能性，以及使用扫描电子显微镜（SEM）和能谱仪（EDS）进行微观结构分析的情况。结果表明，PVC-P防水卷材性能恶化的原因通常与聚合物的脱氯化氢有关。然而，通过循环动态疲劳可以成功证明PVC-P防水卷材机械性能的恶化。
