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Article

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

1
Departamento de Ingeniería de Organización, Administración de Empresas y Estadística, Universidad Politécnica de Madrid, 28660 Madrid, Spain
2
Departamento de Tecnología de la Edificación, Universidad Politécnica de Madrid, 28040 Madrid, Spain
3
Departamento de Economía Financiera, Contabilidad e Idioma Moderno, Universidad Rey Juan Carlos, 28032 Madrid, Spain
4
Departamento de Ingeniería Mecánica, Química y Diseño Industrial, Universidad Politécnica de Madrid, 28012 Madrid, Spain
*
Author to whom correspondence should be addressed.
Materials 2020, 13(24), 5831; https://doi.org/10.3390/ma13245831
Received: 11 November 2020 / Revised: 11 December 2020 / Accepted: 16 December 2020 / Published: 21 December 2020
(This article belongs to the Special Issue Mechanical Characterization of Gypsum Composites)
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. View Full-Text
Keywords: low-cost sensors; Arduino; non-destructive evaluation; building materials; gypsum and plaster low-cost sensors; Arduino; non-destructive evaluation; building materials; gypsum and plaster
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MDPI and ACS Style

Ferrández, D.; Morón, C.; Saiz, P.; Atanes-Sánchez, E.; Yedra, E. Low-Cost Sensors for Determining the Variation in Interior Moisture Content in Gypsum Composite Materials. Materials 2020, 13, 5831. https://doi.org/10.3390/ma13245831

AMA Style

Ferrández D, Morón C, Saiz P, Atanes-Sánchez E, Yedra E. Low-Cost Sensors for Determining the Variation in Interior Moisture Content in Gypsum Composite Materials. Materials. 2020; 13(24):5831. https://doi.org/10.3390/ma13245831

Chicago/Turabian Style

Ferrández, Daniel, Carlos Morón, Pablo Saiz, Evangelina Atanes-Sánchez, and Engerst Yedra. 2020. "Low-Cost Sensors for Determining the Variation in Interior Moisture Content in Gypsum Composite Materials" Materials 13, no. 24: 5831. https://doi.org/10.3390/ma13245831

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