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Structural evolution and impact on the compressive strength of fly ash-based geopolymers |
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| Author: | El Hadrami, A.1; Ojala, S.2; Chatir, E. M.1,3; |
| Organizations: |
1Laboratory of Physico-Chemistry of Materials (LPCM), Chemistry Department, Faculty of Sciences, University of Chouaïb Doukkali, BP 20, 24000 El Jadida, Morocco 2Faculty of Technology, Environmental and Chemical Engineering, University of Oulu, P. O. Box 4300, FI-90014 Oulu, Finland 3Laboratory of Coordination and Analytical Chemistry (LCCA) Department of Chemistry, Faculty of Sciences, University of Chouaïb Doukkali, BP 20, 24000 El Jadida, Morocco
4Department of Chemistry, Faculty of Sciences, University of Chouaïb Doukkali, BP 20, 24000 El Jadida, Morocco
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| Format: | article |
| Version: | published version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 1.6 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe202102175111 |
| Language: | English |
| Published: |
Université Mohamed Premier,
2020
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| Publish Date: | 2021-02-17 |
| Description: |
AbstractThis paper concentrates on valorization of the fly ash originating from thermal power plant by alkaline activation. Structural and textural characterization of raw material and prepared geopolymers was carried out. The used raw material belonged to Class F according to ASTM C618–05 and it was mainly composed of quartz, mullite, hematite and calcite, that coexisted with hydroxy-sodalite in final geopolymers. The proportion of the hydroxy-sodalite phase increased with the concentration of the activating agent. During geopolymerization, structural changes appeared including the incorporation of aluminum into the silicate network leading to their crosslinking. Textural characterization showed that the material became more compact during the geopolymerization process, which in agreement with the increase of hydroxy-sodalite phase. These changes lead to an increase of mechanical strength of geopolymers. see all
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| Series: |
Moroccan Journal of chemistry |
| ISSN: | 2351-812X |
| ISSN-L: | 2351-812X |
| Volume: | 8 |
| Issue: | 3 |
| Pages: | 615 - 626 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
218 Environmental engineering |
| Subjects: | |
| Copyright information: |
© The Author(s) 2020. Open Access authors retain the copyrights of their papers, and all open access articles are distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided that the original work is properly cited. The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations. |
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https://creativecommons.org/licenses/by/4.0/ |