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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) | | Hydration | | 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 http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/88719 |
| 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)
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Submitter: Elakneswaran YOGARAJAH
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