Calcium sulfoaluminate clinkers containing ye’elimite (Ca4Al6O12(SO4)) and ternesite (Ca5(SiO4)2SO4) are being widely investigated as components of calcium sulfoaluminate cement clinkers. These may become low energy replacements for Portland cement. Conditional thermodynamic data for ye’elimite and ternesite (enthalpy of formation) have been determined experimentally using a combination of techniques: isothermal conduction calorimetry, X-ray powder diffraction and thermogravimetric analysis. The enthalpies of formation of ye’elimite and ternesite at 25 °C were determined to be − 8523 and − 5993 kJ mol−1, respectively.
|Number of pages||15|
|Journal||Journal of Thermal Analysis and Calorimetry|
|Early online date||17 Oct 2017|
|Publication status||Published - Mar 2018|
- Enthalpy of formation
- Thermogravimetric analysis
- Calcium sulfoaluminate cement