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Influence of partial replacement of calcined red clay by gypsum-bonded casting investment waste on geopolymerization reaction of red clay-based geopolymer
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Document Title
Influence of partial replacement of calcined red clay by gypsum-bonded casting investment waste on geopolymerization reaction of red clay-based geopolymer
Author
Prasanphan S. Onutai S. Nawaukkaratharnant N.
Affiliations
National Metal and Materials Technology Center 114 Thailand Science Park Phahonyothin Road Khlong Nueng Khlong Luang Pathum Thani 12120 Thailand; Nuclear Fuel Cycle Engineering Laboratories Japan Atomic Energy Agency 4-33 Muramatsu Tokai-mura Naga-gun Ibaraki 319-1194 Japan; Metallurgy and Materials Science Research Institute Chulalongkorn University 254 Phyathai Road Pathum Wan Bangkok 10330 Thailand; Upcycled Materials from Industrial and Agricultural Wastes Research Unit Department of Materials Science Faculty of Science Chulalongkorn University Phyathai Road Bangkok 10330 Thailand
Type
Article
Source Title
Heliyon
ISSN
24058440
Year
2024
Volume
10
Issue
2
Open Access
All Open Access Gold Green
Publisher
Elsevier Ltd
DOI
10.1016/j.heliyon.2024.e24448
Abstract
The main objective of this research is to study the influence of partial replacement of calcined red clay by gypsum-bonded casting investment waste (GCIW) from precious metal casting process on geopolymerization reaction of a red clay-based geopolymer. Calcined red clay was partially replaced by GCIW powder with different contents before mixing with sodium-based alkali activator solution to produce the geopolymers. The results indicate that the GCIW significantly impacted the reaction of flesh geopolymers detected by Differential scanning calorimetry (DSC). The reaction products (hydration products and others) of 28-day geopolymers detected by Fourier transform Infrared spectroscopy (FTIR) and X-ray diffractometry (XRD) were employed to support the reaction results. Moreover the relation between reaction products and compressive strength was discussed. This work concluded that the calcium sulfate compounds contained in GCIW play an important role on geopolymerization reaction reaction products and mechanical properties of geopolymer. Furthermore the results could be employed to propose a reaction mechanism that occurred in geopolymers. The potential use of GCIW as an additive for red clay-based geopolymer bricks preparation was confirmed in this research. ? 2024 The Authors
License
CC BY
Rights
Authors
Publication Source
WOS