Raman Spectroscopy of Anhydrous and Hydrated Calcium Aluminates and Sulfoaluminates
| Autor: | Lucía Fernández-Carrasco, Jordi Ibáñez, David Torréns-Martín, Sagrario Martínez-Ramírez, Lluís Artús, Thomas Matschei |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Construccions Arquitectòniques I, Universitat Politècnica de Catalunya. LiTA - Laboratori d'Innovació i Tecnologia en l'Arquitectura |
| Rok vydání: | 2013 |
| Předmět: |
Cement
Ettringite Materials science Aluminate Sulfoaluminates Inorganic chemistry Edificació::Materials de construcció::Ciment [Àrees temàtiques de la UPC] Ciment Clinker (cement) Calcium aluminates Espectroscòpia Raman law.invention chemistry.chemical_compound symbols.namesake chemistry law Raman spectroscopy Materials Chemistry Ceramics and Composites symbols Spectroscopy Calcium aluminate cements |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya |
| ISSN: | 0002-7820 |
| Popis: | Recent investigations have revealed the great potential of Raman spectroscopy for the characterization of clinker minerals and commercial Portland cements. The usefulness of this technique for the identification of anhydrous, hydrated, and carbonated phases in cement-based materials has been demonstrated. In the present work, the application of micro-Raman spectroscopy for the characterization of the main clinker phases of calcium aluminate cements and calcium sulfoaluminate cement is explored. The main stable hydrated phases as well as several important carbonated phases are investigated. Raman measurements on the following phases are reported: (i) pure, unhydrated phases: CA, C12A7, CA2, C2AS, cubic-C 3A, C4AF, and C4A3S̄; (ii) hydrated phases: ettringite, monosulfoaluminate, and hydrogarnet (C 3AH6); (iii) carboaluminate phases: hemicarboaluminate and monocarboaluminate. The present results, which are discussed in terms of the internal vibrational modes of the aluminate, carbonate, and sulfate molecular groups as well as stretching O-H vibrations, show the ability of Raman spectroscopy to identify the main hydrated and unhydrated phases in the aluminate and sulfoaluminate cements. The Raman spectra obtained in this work provide an extended database to the existing data published in the literature. © 2013 The American Ceramic Society. This study was funded by the MINECO (Ministerio de Economıa y Competitividad) through BIA0767-2008 project. |
| Databáze: | OpenAIRE |
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