在ETICS中粘合式砂对基质的粘合强度 - - 测试方法的比较
Paweł Gaciek1,2, Mariusz Gaczek3, Paweł Krause1
1Faculty of Civil Engineering, Silesian University of Technology, 44-100 Gliwice, Poland.
Materials (Basel, Switzerland)
|November 13, 2025
概括
外部隔热复合系统 (ETICS) 中的粘合键强度因粘合层厚度和垂直应用而显著降低,这与常见的指导方针相反. 现实的测试揭示了影响建筑安全的关键性能变化.
科学领域:
- 建筑材料科学 建筑材料科学
- 建筑物理 建筑物理
- 粘附科学 粘附科学 粘附科学
背景情况:
- 外部隔热复合系统 (ETICS) 依赖于粘合砂来粘合隔热板.
- 当前的指导方针经常建议使用比现实应用中使用的更薄的粘合层.
- 应用厚度和方向的变化可能会影响系统性能和耐用性.
研究的目的:
- 在ETICS.中研究扩展聚烯 (EPS) 的水泥基粘合砂的粘合强度.
- 评估粘合层厚度,基板类型和方向对粘合强度的影响.
- 将标准化测试方法与模拟实际应用条件的新方法进行比较.
主要方法:
- 进行了现场调查和采访承包商 (170个问卷),以确定典型的粘合层厚度.
- 通过使用标准化 (EAD) 和内部方法进行实验室拉开测试.
- 多种不同的基板类型 (混凝土,酸盐),方向 (水平,垂直) 和粘合层厚度 (10毫米,20毫米).
主要成果:
- 粘合剂厚度从10毫米增加到20毫米,在混凝土上,粘合强度降低了65-75%.
- 相比于在混凝土上水平放置,垂直的方向使粘附率减半.
- 酸盐基板显示较低但更可变的键强度;在制备过程中发生了一些故障.
- 增加厚度和垂直方向的结合效应大大降低了混凝土上的粘附力 (约. 85%) 的情况.
结论:
- 粘合剂层厚度对粘合强度的影响比定向更大.
- 基质特性显著影响砂的性能和可变性.
- 由于不同的应用条件,当前的测试方法可能无法准确地反映现实世界的性能.
- 公司内部开发的测试方法在实际的ETICS应用场景下提供了对粘合砂的更现实的评估.
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