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Low-Cost Sensors for Determining the Variation in Interior Moisture Content in Gypsum Composite Materials

机译:用于确定石膏复合材料中内部水分含量的变化的低成本传感器

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摘要

Non-destructive testing can be used to determine some of the most relevant physical properties of building materials. In this work, two low-cost measuring devices were developed capable of determining the variation in real-time of the percentage of humidity that is produced in the construction of gypsum and plaster during the hardening process. For this, an Arduino resistive sensor and a capacitive sensor of our design were used. The results show how it is possible to determine the variations in mixing water content during the seven days of curing established by the UNE-EN 13279-2 standard as well relate to the mechanical resistance of the test specimens with the same percentage of humidity. Additionally, the study was completed with the determination of the formation of the dihydrate compound linked to this setting process in the test specimens by conducting X-ray diffraction and thermogravimetric analysis tests at different ages of the samples.
机译:非破坏性测试可以用来确定一些建筑材料的最相关的物理特性。在这项工作中,两个低成本的测量设备被开发能够确定了在石膏和灰泥施工时的硬化过程中产生的湿度的百分比的实时变化的。对于这一点,一个Arduino电阻式传感器和我们的设计的电容式传感器被使用。结果表明它是如何能够确定在混合期间七天通过UNE-EN 13279-2标准固化建立以及涉及测试样品与湿度的相同百分比的机械阻力的水含量的变化。此外,该研究是通过在样品的不同年龄进行X射线衍射和热重分析测试连接到该设置过程中试样的二水合物化合物的形成的判断完成。

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