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Title:

α‐calcium sulfate hemihydrate formation using natural anhydrite as raw material

Document type:
Konferenzbeitrag
Author(s):
Eicheler, Christina; Heisig, Anne; Hilbig, Harald; Machner, Alisa
Abstract:
This study investigates the potential of α-HH formation from gypsum originating from activated and hydrated natural anhydrite. For this, gypsum was prepared from natural anhydrite and treated in an autoclave process under hydrothermal condi-tions (150 mbar and 130 °C). For comparison, fgd-gypsum was treated accordingly. Succinic acid, maleic acid and additional α-HH seeds were used as crystallization aids. QXRD results show the transformation of gypsum into hemihydrate after...     »
Keywords:
α-calcium sulfate hemihydrate, natural anhydrite, hydrothermal, autoclave, succinic acid, QXRD, SEM
Book / Congress title:
21st International Conference on Building Materials 2023 (ibausil)
Congress (additional information):
Weimar, Germany
Volume:
6
Date of congress:
13.–15.09.2023
Publisher:
ce/papers
Date of publication:
06.12.2023
Year:
2023
Pages:
551-556
E-ISBN:
2509-70752509-7075
Reviewed:
nein
Language:
en
Fulltext / DOI:
doi:10.1002/cepa.2845
TUM Institution:
Centrum Baustoffe und Materialprüfung; Professur für Mineral Construction Materials; TUM School of Engineering and Design
Copyright statement:
© 2023 The Authors. Published by Ernst & Sohn GmbH
Ingested:
15.12.2023
Last change:
15.12.2023
CC license:
by-nc-nd, http://creativecommons.org/licenses/by-nc-nd/4.0
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