Effect of alkali content of raw meal on composition and hydration of belite-calcium sulfoaluminate cement

The aim of the present investigation is to design a suitable raw meal which when burnt yields a belite-rich clinker with calcium sulfoaluminates. However, using different fly ashes with different mineralogical and chemical compositions in the raw meal affects the composition of the clinker. This study considers the effect of different alkali contents in a model system based on a raw meal with fly ash on clinker composition and the hydration behaviour. Thus, the effect of using different fly ashes in the raw meal can be estimated in advance. Results are presented for heat flow calorimetry, X-ray diffraction, simultaneous thermal analysis and solid state NMR measurements.     «

The aim of the present investigation is to design a suitable raw meal which when burnt yields a belite-rich clinker with calcium sulfoaluminates. However, using different fly ashes with different mineralogical and chemical compositions in the raw meal affects the composition of the clinker. This study considers the effect of different alkali contents in a model system based on a raw meal with fly ash on clinker composition and the hydration behaviour. Thus, the effect of using different fly ashe...     »