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A platform for research: civil engineering, architecture and urbanism
Belite Portland clinkers. Synthesis and mineralogical analysis
The quaternary system CaO-SiO2-Al2O3-Fe2O3 has been taken into account to design five compositions of belite Portland clinkers with belite (Ca2SiO4) contents ranging from 60 weight-% to 65 weight-%, located in its primary phase field of crystallization. The synthesis of those belite clinkers has been studied by high temperature microscopy, dilatometry, differential thermal analysis and thermogravimetric analysis. As a result, the optimum clinkerization temperature has been established at 1360 deg C +/- 5 deg C. The quantitative phase analyses of the clinkers were carried out by X-ray powder diffraction with the Rietveld methodology. The mineralogical composition depends on the initial dosages, on the highest temperature achieved and on the time of residence at this temperature. The reaction was completed at 1365 deg C during 15 min (free Ca0 <0.5 weight-%), in those conditions the beta-belite form is stabilized and the harmful transformation beta to gamma avoided.
Belite Portland clinkers. Synthesis and mineralogical analysis
The quaternary system CaO-SiO2-Al2O3-Fe2O3 has been taken into account to design five compositions of belite Portland clinkers with belite (Ca2SiO4) contents ranging from 60 weight-% to 65 weight-%, located in its primary phase field of crystallization. The synthesis of those belite clinkers has been studied by high temperature microscopy, dilatometry, differential thermal analysis and thermogravimetric analysis. As a result, the optimum clinkerization temperature has been established at 1360 deg C +/- 5 deg C. The quantitative phase analyses of the clinkers were carried out by X-ray powder diffraction with the Rietveld methodology. The mineralogical composition depends on the initial dosages, on the highest temperature achieved and on the time of residence at this temperature. The reaction was completed at 1365 deg C during 15 min (free Ca0 <0.5 weight-%), in those conditions the beta-belite form is stabilized and the harmful transformation beta to gamma avoided.
Belite Portland clinkers. Synthesis and mineralogical analysis
Belit-enthaltender Portlandklinker. Synthese und mineralogische Analyse
Torre, A.G. de la (author) / Aranda, M.A.G. (author) / Aza, A.H. de (author) / Pena, P. (author) / Aza, S. de (author)
Boletin de la Sociedad Espanola de Ceramica y Vidrio ; 44 ; 185-191
2005
7 Seiten, 6 Bilder, 4 Tabellen, 28 Quellen
Article (Journal)
English
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