Preparation of Cement Clinker from Geopolymer-Based Wastes
In order to avoid potential environmental pollution from geopolymer-based material wastes, this work investigated the feasibility of using these materials as alternative raw materials in the preparation of cement clinker. The geopolymer binders and mortars were used as substitutes for natural minera...
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MDPI AG
2021-10-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/21/6534 |
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| author | Rabii Hattaf Mohamed Benchikhi Abdessamad Azzouzi Rachida El Ouatib Moussa Gomina Azzeddine Samdi Redouane Moussa |
| author_facet | Rabii Hattaf Mohamed Benchikhi Abdessamad Azzouzi Rachida El Ouatib Moussa Gomina Azzeddine Samdi Redouane Moussa |
| author_sort | Rabii Hattaf |
| collection | DOAJ |
| description | In order to avoid potential environmental pollution from geopolymer-based material wastes, this work investigated the feasibility of using these materials as alternative raw materials in the preparation of cement clinker. The geopolymer binders and mortars were used as substitutes for natural mineral clays since they are rich in silica and alumina. Simulated geopolymer wastes were prepared by the activation of metakaolin or fly ash by an alkaline silicate solution. The cement-clinkers fired at 1450 °C for 1h were characterized by XRD, XRF, SEM-EDS, and a free lime (CaO<sub>f</sub>) content test. The anhydrous clinker mineral phases C<sub>3</sub>S (Ca<sub>3</sub>SiO<sub>5</sub>), C<sub>2</sub>S (Ca<sub>2</sub>SiO<sub>4</sub>), C<sub>3</sub>A (Ca<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>), and C<sub>4</sub>AF (Ca<sub>4</sub>Al<sub>2</sub>Fe<sub>2</sub>O<sub>10</sub>) were well-crystallized in all investigated formulations. The free lime was lower than 1.3 wt% in all elaborated clinkers, which indicates a high degree of clinkerization. The results demonstrate that geopolymer binder and mortar materials are suitable substitutes for natural mineral clay incement clinker preparation. |
| first_indexed | 2024-03-10T05:57:50Z |
| format | Article |
| id | doaj.art-75d9e68113ca4f96ae0ab8f56d7832ab |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T05:57:50Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-75d9e68113ca4f96ae0ab8f56d7832ab2023-11-22T21:13:38ZengMDPI AGMaterials1996-19442021-10-011421653410.3390/ma14216534Preparation of Cement Clinker from Geopolymer-Based WastesRabii Hattaf0Mohamed Benchikhi1Abdessamad Azzouzi2Rachida El Ouatib3Moussa Gomina4Azzeddine Samdi5Redouane Moussa6Laboratory of Physics and Chemistry of Inorganic Materials, Faculty of Sciences Aïn Chock, University Hassan II Casablanca, Casablanca 53306, MoroccoLaboratory of Physics and Chemistry of Inorganic Materials, Faculty of Sciences Aïn Chock, University Hassan II Casablanca, Casablanca 53306, MoroccoLaboratory of Physics and Chemistry of Inorganic Materials, Faculty of Sciences Aïn Chock, University Hassan II Casablanca, Casablanca 53306, MoroccoLaboratory of Physics and Chemistry of Inorganic Materials, Faculty of Sciences Aïn Chock, University Hassan II Casablanca, Casablanca 53306, MoroccoCRISMAT UMR6508 CNRS, ENSICAEN, 6 Boulevard Maréchal Juin, CEDEX 4, 14050 Caen, FranceLaboratory of Physics and Chemistry of Inorganic Materials, Faculty of Sciences Aïn Chock, University Hassan II Casablanca, Casablanca 53306, MoroccoLaboratory of Physics and Chemistry of Inorganic Materials, Faculty of Sciences Aïn Chock, University Hassan II Casablanca, Casablanca 53306, MoroccoIn order to avoid potential environmental pollution from geopolymer-based material wastes, this work investigated the feasibility of using these materials as alternative raw materials in the preparation of cement clinker. The geopolymer binders and mortars were used as substitutes for natural mineral clays since they are rich in silica and alumina. Simulated geopolymer wastes were prepared by the activation of metakaolin or fly ash by an alkaline silicate solution. The cement-clinkers fired at 1450 °C for 1h were characterized by XRD, XRF, SEM-EDS, and a free lime (CaO<sub>f</sub>) content test. The anhydrous clinker mineral phases C<sub>3</sub>S (Ca<sub>3</sub>SiO<sub>5</sub>), C<sub>2</sub>S (Ca<sub>2</sub>SiO<sub>4</sub>), C<sub>3</sub>A (Ca<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>), and C<sub>4</sub>AF (Ca<sub>4</sub>Al<sub>2</sub>Fe<sub>2</sub>O<sub>10</sub>) were well-crystallized in all investigated formulations. The free lime was lower than 1.3 wt% in all elaborated clinkers, which indicates a high degree of clinkerization. The results demonstrate that geopolymer binder and mortar materials are suitable substitutes for natural mineral clay incement clinker preparation.https://www.mdpi.com/1996-1944/14/21/6534geopolymerwasteclinkeralternative raw materials |
| spellingShingle | Rabii Hattaf Mohamed Benchikhi Abdessamad Azzouzi Rachida El Ouatib Moussa Gomina Azzeddine Samdi Redouane Moussa Preparation of Cement Clinker from Geopolymer-Based Wastes Materials geopolymer waste clinker alternative raw materials |
| title | Preparation of Cement Clinker from Geopolymer-Based Wastes |
| title_full | Preparation of Cement Clinker from Geopolymer-Based Wastes |
| title_fullStr | Preparation of Cement Clinker from Geopolymer-Based Wastes |
| title_full_unstemmed | Preparation of Cement Clinker from Geopolymer-Based Wastes |
| title_short | Preparation of Cement Clinker from Geopolymer-Based Wastes |
| title_sort | preparation of cement clinker from geopolymer based wastes |
| topic | geopolymer waste clinker alternative raw materials |
| url | https://www.mdpi.com/1996-1944/14/21/6534 |
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