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Open AccessArticle

Mechanical and Non-Destructive Testing of Plasterboards Subjected to a Hydration Process

1
Experimental Mechanics Division, Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B, 02-106 Warszawa, Poland
2
Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, Aleja Mickiewicza 30, 30-059 Kraków, Poland
3
Faculty of Energy and Environmental Engineering, Silesian University of Technology, ul. Akademicka 2A, 44-100 Gliwice, Poland
4
Faculty of Civil Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
*
Author to whom correspondence should be addressed.
Materials 2020, 13(10), 2405; https://doi.org/10.3390/ma13102405
Received: 29 April 2020 / Revised: 18 May 2020 / Accepted: 20 May 2020 / Published: 23 May 2020
(This article belongs to the Special Issue Testing of Materials and Elements in Civil Engineering)
The aim of this study was to investigate the effect of plasterboards’ humidity absorption on their performance. Specimens’ hydration procedure consisted of consecutive immersing in water and subsequent drying at room temperature. Such a procedure was performed to increase the content of moisture within the material volume. The microstructural observations of five different plasterboard types were performed through optical and scanning electron microscopy. The deterioration of their properties was evaluated by using a three-point bending test and a subsequent ultrasonic (ultrasound testing (UT)) longitudinal wave velocity measurement. Depending on the material porosity, a loss of UT wave velocity from 6% to 35% and a considerable decrease in material strength from 70% to 80% were observed. Four types of approximated formulae were proposed to describe the dependence of UT wave velocity on board moisture content. It was found that the proposed UT method could be successfully used for the on-site monitoring of plasterboards’ hydration processes. View Full-Text
Keywords: plasterboards; moisture content; hydration processes; mechanical properties; ultrasound measurements plasterboards; moisture content; hydration processes; mechanical properties; ultrasound measurements
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Ranachowski, Z.; Ranachowski, P.; Dębowski, T.; Brodecki, A.; Kopec, M.; Roskosz, M.; Fryczowski, K.; Szymków, M.; Krawczyk, E.; Schabowicz, K. Mechanical and Non-Destructive Testing of Plasterboards Subjected to a Hydration Process. Materials 2020, 13, 2405.

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