Yeelimite-containing cements are attracting attention for their tailored properties. Calcium sulfoaluminate,
CSA, cements have high contents of Yeelimite and they are used for special applications. Belite calcium
sulfoaluminate, BCSA or sulfobelite, cements have high contents of belite and intermediate contents of
Yeelimite, and they may become an alternative to OPC. Here, we report Rietveld quantitative phase analyses
for three commercially available CSA clinkers, one CSA cement, and two laboratory-prepared iron-rich BCSA
clinkers. The crystalline phases are reported and quantified. Selective dissolutions are employed for BCSA
clinkers to firmly establish their phases. Finally, the overall unaccounted contents (amorphous plus crystalline
not quantified) have been determined by two approaches: i) external standard procedure (G-method) with
reflection data; ii) internal standard procedure (spiking method with ZnO) with transmission data. The overall
unaccounted contents for CSA clinkers were ~10 wt.%. Conversely, the unaccounted contents for BCSA clinkers
were higher, ~25 wt.%.
