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Hydration of ferrite-rich Portland cement: Evaluation of Fe-hydrates and Fe uptake in calcium-silicate-hydrates

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Title: Hydration of ferrite-rich Portland cement: Evaluation of Fe-hydrates and Fe uptake in calcium-silicate-hydrates
Authors: Noguchi, Natsumi Browse this author
Siventhirarajah, Krishnya Browse this author
Chabayashi, Takashi Browse this author
Kato, Hiroyoshi Browse this author
Nawa, Toyoharu Browse this author →KAKEN DB
Elakneswaran, Yogarajah Browse this author
Keywords: Ferrite-rich cement (FC)
Fe phases
Calcium-silicate-hydrate (C-S-H)
Thermodynamic modelling
Issue Date: 21-Jun-2021
Publisher: Elsevier
Journal Title: Construction and building materials
Volume: 288
Start Page: 123142
Publisher DOI: 10.1016/j.conbuildmat.2021.123142
Abstract: The hydration process in ferrite-rich cement (FC) and its pore structure have been investigated by experimental and thermodynamic modelling techniques. X-ray diffraction (XRD)/Rietveld analysis, thermogravimetry (TG), and mercury intrusion porosimetry (MIP) were performed to study the hydration process, pore volume-pore size distributions, and Fe uptake in calcium-silicate-hydrate (C-S-H). Similar phases were found in both FC and ordinary Portland cement (OPC). The hydration degree of FC was higher at the early stage compared with that of OPC; however, the hydration of OPC exceeded that of FC after 14 days because the high amount of C2S in OPC promoted the late hydration. The XRD-TG results revealed relatively similar Fe uptake by C-S-H in both FC and OPC. The thermodynamic model confirmed the formation of a high amount of Fe phases in FC. Moreover, the model predictions agreed well with the experimental results, demonstrating the accuracy of the proposed model for FC.
Rights: © <2021>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Elakneswaran YOGARAJAH

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