Influence of drying methods on composition changes of gypsum paste at early age

Whereas the hydration stoppage of cementitious materials has been widely studied and discussed, there is a lack of knowledge concerning water removal techniques/arresting of hardening processes of non-cementitious materials, such as environmentally friendly calcined gypsum. This article, therefore,...

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Bibliographic Details
Main Authors: Scheinherrová, Lenka, Doleželová, Magdaléna, Petříková, Michaela, Vimmrová, Alena
Format: Conference Proceeding
Language:English
Subjects:
Composition effects
Differential scanning calorimetry
Drying
Gypsum
Thermogravimetry
X ray powder diffraction
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Summary:Whereas the hydration stoppage of cementitious materials has been widely studied and discussed, there is a lack of knowledge concerning water removal techniques/arresting of hardening processes of non-cementitious materials, such as environmentally friendly calcined gypsum. This article, therefore, aims to apply the commonly used water removal methods, namely direct drying and solvent replacement for arresting processes of gypsum paste, and compare their effects on its composition. The effects of drying methods were studied with the help of thermal analysis consisting of differential scanning calorimetry and thermogravimetry, and these results were complemented with X-ray powder diffraction analysis.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0069706