کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1458134 | 989303 | 2005 | 7 صفحه PDF | دانلود رایگان |

The study describes the influence of chromium and phosphorus additions on the phase transformations during the formation of the calcium sulfoaluminate Ca4Al6SO16 from CaCO3–Al2O3–CaSO4 mixtures. The temperatures of decarbonation reaction were measured by means of differential thermal analysis. The enthalpy variations at different heating temperatures were determined by isothermal calorimetry. The results show that the Cr2O3 and P2O5 additions lower the onset temperature of decarbonation. The energy requirement at high temperature of the doped mixtures is less, compared to that of mixtures without dopants. The formation of solid solutions is followed by X-ray diffraction. The higher concentrations of additives hinder the formation of the C4A3S¯ phase.
Journal: Cement and Concrete Research - Volume 35, Issue 11, November 2005, Pages 2074–2080