Preparation and characterization of alkali-activated white belite cements
Activated white cement clinkers with a theoretical 60% (wt) belite (dicalcium silicate) content were prepared at a temperature 100 ºC lower than used to manufacture conventional white Portland cement clinkers. Activation was achieved by adding variable amounts of K2CO 3 or Na2CO 3 to the raw mixes....
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2009-06-01
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| Series: | Materiales de Construccion |
| Subjects: | |
| Online Access: | http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/134 |
| _version_ | 1818650184176893952 |
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| author | K. Morsli Ángeles G. de la Torre Antonio J. M. Cuberos Mohammed Zahir Miguel A. G. Aranda |
| author_facet | K. Morsli Ángeles G. de la Torre Antonio J. M. Cuberos Mohammed Zahir Miguel A. G. Aranda |
| author_sort | K. Morsli |
| collection | DOAJ |
| description | Activated white cement clinkers with a theoretical 60% (wt) belite (dicalcium silicate) content were prepared at a temperature 100 ºC lower than used to manufacture conventional white Portland cement clinkers. Activation was achieved by adding variable amounts of K2CO 3 or Na2CO 3 to the raw mixes. Rietveld quantitative analysis of X-ray diffraction findings showed that adding the alkalis stabilized the high temperature belite polymorphs. When 2.0% (wt) of Na2O was added, the composition (by wt) found was 16.4(4)% alpha-C2S, 16.7(8)% alpha’-H-C2S, 23.2(6)% beta-C2S, 32.7(7)% total C3S, 9.5(2)% orthorhombic C3A and 1.50(5)% free lime. Due to the high volatilization rate of K2O under the experimental conditions, it stabilized the alpha-type C2S less effectively than Na2O. A calorimetric study was likewise performed to correlate the phase composition with early age hydration (behaviour). |
| first_indexed | 2024-12-17T01:46:11Z |
| format | Article |
| id | doaj.art-792eda6b74c64ce781e14faf20dc1014 |
| institution | Directory Open Access Journal |
| issn | 0465-2746 1988-3226 |
| language | English |
| last_indexed | 2024-12-17T01:46:11Z |
| publishDate | 2009-06-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Materiales de Construccion |
| spelling | doaj.art-792eda6b74c64ce781e14faf20dc10142022-12-21T22:08:11ZengConsejo Superior de Investigaciones CientíficasMateriales de Construccion0465-27461988-32262009-06-0159294192910.3989/mc.2009.44307129Preparation and characterization of alkali-activated white belite cementsK. Morsli0Ángeles G. de la Torre1Antonio J. M. Cuberos2Mohammed Zahir3Miguel A. G. Aranda4Universidad de Málaga. Université Chouaib Doukkali, El JadidaUniversidad de MálagaUniversidad de MálagaUniversité Chouaib Doukkali, El JadidaUniversidad de MálagaActivated white cement clinkers with a theoretical 60% (wt) belite (dicalcium silicate) content were prepared at a temperature 100 ºC lower than used to manufacture conventional white Portland cement clinkers. Activation was achieved by adding variable amounts of K2CO 3 or Na2CO 3 to the raw mixes. Rietveld quantitative analysis of X-ray diffraction findings showed that adding the alkalis stabilized the high temperature belite polymorphs. When 2.0% (wt) of Na2O was added, the composition (by wt) found was 16.4(4)% alpha-C2S, 16.7(8)% alpha’-H-C2S, 23.2(6)% beta-C2S, 32.7(7)% total C3S, 9.5(2)% orthorhombic C3A and 1.50(5)% free lime. Due to the high volatilization rate of K2O under the experimental conditions, it stabilized the alpha-type C2S less effectively than Na2O. A calorimetric study was likewise performed to correlate the phase composition with early age hydration (behaviour).http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/134activated white belite cementsx-ray diffractionrietveld methodisothermal conduction calorimetry |
| spellingShingle | K. Morsli Ángeles G. de la Torre Antonio J. M. Cuberos Mohammed Zahir Miguel A. G. Aranda Preparation and characterization of alkali-activated white belite cements Materiales de Construccion activated white belite cements x-ray diffraction rietveld method isothermal conduction calorimetry |
| title | Preparation and characterization of alkali-activated white belite cements |
| title_full | Preparation and characterization of alkali-activated white belite cements |
| title_fullStr | Preparation and characterization of alkali-activated white belite cements |
| title_full_unstemmed | Preparation and characterization of alkali-activated white belite cements |
| title_short | Preparation and characterization of alkali-activated white belite cements |
| title_sort | preparation and characterization of alkali activated white belite cements |
| topic | activated white belite cements x-ray diffraction rietveld method isothermal conduction calorimetry |
| url | http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/134 |
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