Reaction characteristics of various gypsum as chemical heat pump materials

Lee, Junhee; Ogura, Hironao

doi:10.1016/j.applthermaleng.2012.05.026

Cited by 7 publications

(1 citation statement)

References 5 publications

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“…In order to allow plaster reuse after consumption and its reproducibility, it is necessary to study the dehydration process of the material seeing that the type of calcium sulfate obtained depends on the temperature used. [4]…”

Section: Introductionmentioning

confidence: 99%

Characterization of Gypsum Waste from Civil Construction to Obtain Polymer Composites

Bartolomei

Wiebeck

2019

MSF

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This work aims to characterize the post-consumption plaster and compare it with virgin plaster. Burrs from plaster frames manufacturing were collected at the manufacturer. These samples were dried in a drying oven. Then, they were milled in a ball mill, until forming a fine and homogeneous powder. The samples were returned to the drying oven at three different temperatures, 100, 150 and 200°C, to define the best drying temperature, because the water removed in this process changes the structure of the semi-hydrated calcium sulfate gypsum into bihydrated. Then, vibrational Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were performed to characterize the virgin plaster and the reused plaster, making it possible to know the structure and the groups present in the components.

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Section: Introductionmentioning

confidence: 99%